Marla Dubinsky

Marla C. Dubinsky received a medical degree from Queen’s University in Canada and completed her clinical pediatric gastroenterology training at Sainte-Justine Hospital, University of Montreal in Quebec, Canada adn her IBD training at Cedars-SInai Medical Center, Los Angeles, CA. Dr. Dubinsky is a proud recipient of the 2022 Sherman Prize for Excellence in Crohn’s and Colitis and a 2024 Jacobi Medallion winner for her contibutions to Mount Sinai. Currently, Dr. Dubinsky is Chief of Pediatric Gastroenterology and Nutrition, as well as the Co-Director of the Susan and Leonard Feinstein Inflammatory Bowel Disease Clinical Center and Co-director of the Marie and Barry Lipman Preconception and Pregnancy Planning Clinic at Mount Sinai Hospital, New York, She is a Professor of both Pediatrics and Medicine at the Icahn School of Medicine, Her primary research focuses on the influence of genetics and immune responses on the variability in clinical presentations, treatment responses and prognosis of IBD. Her other interests include the impact of IBD on fertility and pregnancy. She has lectured widely both nationally and internationally and has published in over 400 peer reviewed journals including New England Journal of Medicine, Lancet, Gastroenterology, The American Journal of Gastroenterology, The Journal of Pediatric Gastroenterology and Nutrition, Inflammatory Bowel Diseases, and of Crohn's and Colitis .

Millie D. Long MD, MPH earned her doctor of medicine degree at the University of Virginia. She completed a residency and chief residency in internal medicine at the University of Alabama at Birmingham. She then completed a gastroenterology fellowship at University of North Carolina. She also completed a fellowship in preventive medicine and a masters of public health in epidemiology at the Gillings School of Public Health. She is board certified in internal medicine, preventive medicine, and gastroenterology. She is currently Professor of Medicine in the Division of Gastroenterology and Hepatology at the University of North Carolina, as well as Chief of the Division.

Dr. Long’s clinical practice is at the UNC Multidisciplinary Inflammatory Bowel Diseases (IBD) center. Her research interests include prevention of complications of IBD, women’s health and clinical epidemiology. Dr. Long has contributed over 200 peer-reviewed publications, book chapters, and review articles to the literature. She co-authored the 2025 ACG ulcerative colitis guidelines. She serves Co-Editor in Chief of the American Journal of Gastroenterology.

Dr. Long is a fellow of the American College of Gastroenterology where she is a member of the Board of Trustees. She is also a fellow of the American Gastroenterological Association and a member of the Crohn’s and Colitis Foundation. Recipient of the 2024 Sherman Prize for Excellence in Crohn’s and Colitis. She is a member of the International Organization for the Study of IBD.

Dr. Aline Charabaty is Professor of Medicine at the University of Maryland and the Director of the IBD Program at the University of Maryland Medical center. She is the Editor-in-Chief of the Crohn’s and Colitis 360 journal, and is past Vice-Chair of the AGA Research Foundation Executive Board, and past ACG Governor for Washington DC. Her work and advocacy were recognized by the Crohn’s and Colitis Foundation Excellence in Medicine Award in 2020 , the ACG Diversity Equity and Inclusion Award in 2025, and the AGA Beacon of Hope Award in 2026. Dr Charabaty uses social media to amplify medical education in IBD and is the founder of @MondayNightIBD a CME platform on twitter for which she received the Healio Disruptive Innovator Award in 2019. Dr Charabaty is a strong advocate for diversity and the professional advancement of women in GI. She is the Co-Founder of Scrubs & Heels, a foundation focused on empowering women in GI with the leadership skills, networking and mentorship to achieve professional goals and growth.

Dr. Kara De Felice serves as an Associate Professor of Clinical Medicine and the Director of Inflammatory Bowel Diseases at the University of Cincinnati. Leading a multidisciplinary IBD team, her mission is to deliver exceptional patient care and improve long-term outcomes through clinical excellence, participation in clinical trials, and the training of the next generation of gastroenterologists. A dedicated educator, she is a frequent speaker at regional and national conferences with a specialized focus on women in GI and Advanced Practice Provider (APP) education. Outside of the clinic, she enjoys traveling, playing tennis, and hosting dinner and cocktail parties.

Dr. Christina Ha completed her internal medicine residency and fellowship at the Washington University in St. Louis School of Medicine and then received additional training as the Present-Levison Inflammatory Bowel Diseases Fellow at the Mount Sinai School of Medicine. She is Director of the Inflammatory Bowel Disease Section and Associate Professor of Medicine at Mayo Clinic Arizona. Her clinical research interests focus on the impact of aging on the natural history of the inflammatory bowel diseases, especially the pathogenesis and natural history of late-onset IBD. She is also very involved in IBD related trainee educational initiatives and has served on multiple committees within the Crohn’s and Colitis Foundation, American College of Gastroenterology, and American Gastroenterological Association.

Dr. Maia Kayal is an Associate Professor in the Division of Gastroenterology at the Icahn School of Medicine at Mount Sinai and The Susan and Leonard Feinstein IBD Center. She graduated from New York University School of Medicine Alpha Omega Alpha. She then completed her internal medicine residency at Columbia University Medical Center-New York Presbyterian Hospital and fellowship training in gastroenterology at the Mount Sinai Hospital. Dr. Kayal's research in inflammatory conditions of the ileal pouch is funded by the NIH, Crohn’s and Colitis Foundation, and Rainin Foundation. She is a former ACG Young Physicians Leadership Scholar and AGA Future Leader.

Marla C. Dubinsky received a medical degree from Queen’s University in Canada and completed her clinical pediatric gastroenterology training at Sainte-Justine Hospital, University of Montreal in Quebec, Canada adn her IBD training at Cedars-SInai Medical Center, Los Angeles, CA. Dr. Dubinsky is a proud recipient of the 2022 Sherman Prize for Excellence in Crohn’s and Colitis and a 2024 Jacobi Medallion winner for her contibutions to Mount Sinai. Currently, Dr. Dubinsky is Chief of Pediatric Gastroenterology and Nutrition, as well as the Co-Director of the Susan and Leonard Feinstein Inflammatory Bowel Disease Clinical Center and Co-director of the Marie and Barry Lipman Preconception and Pregnancy Planning Clinic at Mount Sinai Hospital, New York, She is a Professor of both Pediatrics and Medicine at the Icahn School of Medicine, Her primary research focuses on the influence of genetics and immune responses on the variability in clinical presentations, treatment responses and prognosis of IBD. Her other interests include the impact of IBD on fertility and pregnancy. She has lectured widely both nationally and internationally and has published in over 400 peer reviewed journals including New England Journal of Medicine, Lancet, Gastroenterology, The American Journal of Gastroenterology, The Journal of Pediatric Gastroenterology and Nutrition, Inflammatory Bowel Diseases, and of Crohn's and Colitis .

Dr. Hanauer is the Clifford Joseph Barborka Professor of Medicine and Medical Director of the Digestive Health Center at Northwestern University’s Feinberg School of Medicine since 2014. Dr. Hanauer received his medical degree from the University of Illinois Chicago, and he completed his residency in internal medicine and a fellowship in gastroenterology at the University of Chicago in 1982. In 2014, Dr. Hanauer was named the Medical Director of the Digestive Health Center at Northwestern Medicine and the Clifford Joseph Barborka Professor of Medicine in the Northwestern University’s Feinberg School of Medicine, where he continues to treat IBD patients and conducts research into new therapies.

Dr. Hanauer is a Fellow and past President of the American College of Gastroenterology (ACG) and the former Chair of the American Gastroenterological Association’s Inflammation, Immunology, and IBD Section. In October 2020, received the Master of the American College of Gastroenterology.

Internationally recognized expert on the treatment of inflammatory bowel disease (IBD), former chair of the FDA Gastrointestinal Drugs Advisory Committee and advisor on the development of multiple leading IBD drugs. Dr. Hanauer has expertise in designing and leading clinical studies for IBD related therapies and has acted as a clinical investigator and/or advisor to pharmaceutical companies in the development of most of the leading IBD therapies.

Dr. Hanauer has authored over 500 peer-reviewed journal articles and numerous books and book chapters, abstracts, monographs, and editorials. He has been a reviewer for NEJM, Annals of Internal Medicine, Lancet, Gastroenterology and numerous specialty journals.

Millie D. Long MD, MPH earned her doctor of medicine degree at the University of Virginia. She completed a residency and chief residency in internal medicine at the University of Alabama at Birmingham. She then completed a gastroenterology fellowship at University of North Carolina. She also completed a fellowship in preventive medicine and a masters of public health in epidemiology at the Gillings School of Public Health. She is board certified in internal medicine, preventive medicine, and gastroenterology. She is currently Professor of Medicine in the Division of Gastroenterology and Hepatology at the University of North Carolina, as well as Chief of the Division.

Dr. Long’s clinical practice is at the UNC Multidisciplinary Inflammatory Bowel Diseases (IBD) center. Her research interests include prevention of complications of IBD, women’s health and clinical epidemiology. Dr. Long has contributed over 200 peer-reviewed publications, book chapters, and review articles to the literature. She co-authored the 2025 ACG ulcerative colitis guidelines. She serves Co-Editor in Chief of the American Journal of Gastroenterology.

Dr. Long is a fellow of the American College of Gastroenterology where she is a member of the Board of Trustees. She is also a fellow of the American Gastroenterological Association and a member of the Crohn’s and Colitis Foundation. Recipient of the 2024 Sherman Prize for Excellence in Crohn’s and Colitis. She is a member of the International Organization for the Study of IBD.

Dr. Jessica Allegretti currently serves as the Medical Director of the Crohn’s and Colitis Center at the Brigham and Women’s Hospital. In 2020, she received the Sherman Emerging Leader Prize for Excellence in Crohn’s and Colitis. In addition, she developed and leads the hospital’s Fecal Microbiota Transplantation Program and has grown to become and international expert on the topic. Dr. Allegretti cares for patients with inflammatory bowel disease as well as Clostridioides difficile (c.diff) infection. Her research focuses on the intestinal microbiome and the consequences of its derangement, with the goal of understanding the role dysbiosis plays in microbial associated diseases. In addition, her lab focuses on novel therapeutic agents for IBD and she is leading multiple sponsored and investigator initiated drug trials. For more information visit www.allegrettilab.com

Marla C. Dubinsky received a medical degree from Queen’s University in Canada and completed her clinical pediatric gastroenterology training at Sainte-Justine Hospital, University of Montreal in Quebec, Canada adn her IBD training at Cedars-SInai Medical Center, Los Angeles, CA. Dr. Dubinsky is a proud recipient of the 2022 Sherman Prize for Excellence in Crohn’s and Colitis and a 2024 Jacobi Medallion winner for her contibutions to Mount Sinai. Currently, Dr. Dubinsky is Chief of Pediatric Gastroenterology and Nutrition, as well as the Co-Director of the Susan and Leonard Feinstein Inflammatory Bowel Disease Clinical Center and Co-director of the Marie and Barry Lipman Preconception and Pregnancy Planning Clinic at Mount Sinai Hospital, New York, She is a Professor of both Pediatrics and Medicine at the Icahn School of Medicine, Her primary research focuses on the influence of genetics and immune responses on the variability in clinical presentations, treatment responses and prognosis of IBD. Her other interests include the impact of IBD on fertility and pregnancy. She has lectured widely both nationally and internationally and has published in over 400 peer reviewed journals including New England Journal of Medicine, Lancet, Gastroenterology, The American Journal of Gastroenterology, The Journal of Pediatric Gastroenterology and Nutrition, Inflammatory Bowel Diseases, and of Crohn's and Colitis .

Professor Remo Panaccione is a Professor of Medicine and the Director of the Inflammatory Bowel Disease Unit at the University of Calgary, Canada. He serves as the Dean of MD Admissions and Director of the IBD Fellowship Program. He also holds the Crohn’s Colitis Canada Endowed Research Chair in Inflammatory Bowel Disease.

He is the 2020 Crohn's Colitis Canada Outstanding Physician of the Year and received the 2024 Crohn’s Colitis Canada Research Leadership Award for his contributions to the field. Since 2020 he has been a Clarivate Research Scholar for being cited in the top one percent of researchers in the world. He has co-authored over 500 manuscripts, 20 book chapters and 825 abstracts, including publications in journals such as the New England Journal of Medicine, The Lancet, JAMA, Nature, and Annals of Internal Medicine.

Prof. Panaccione’s main research interest is the design and implementation of clinical trials. He has been the principal investigator on several studies evaluating the efficacy and safety of new therapeutic agents in subjects with IBD.

Dr. Rieder is Vice Chair and Co-Director of the IBD section at the Department of Gastroenterology, Hepatology and Nutrition at the Cleveland Clinic, Cleveland. His clinical focus is patients with IBD with a special emphasis on the field of pathogenesis, prediction and therapy of intestinal fibrosis. Dr. Rieder has published more than 200 articles and book chapters and has been recognized for his expertise as indicated through invitations to clinical guideline steering committees of the European Crohn’s and Colitis Organization (ECCO). He is lead author of the ECCO guidelines on Ulcerative colitis and lead author of the first ECCO clinical consensus on ‘Diagnosis and Management of Intestinal Fibrosis’. He received multiple international invitations as a speaker, session chair or conference faculty. Dr. Rieder serves as an abstract reviewer for all major GI conferences, he is past associate editor (Clinical and Translational Gastroenterology) and on several editorial boards of medical journals. He is proud of his significant ties to the ECCO, which he served as the chair of Y-ECCO, member of the ECCO operational board, prior Y-ECCO committee member and member of the scientific committee. He is past chair of REACH-IBD and Co-Chair of the Professional Education Committee of the Crohn’s and Colitis Foundation. Dr. Rieder is the leading PI on the international Stenosis Therapy and Research (STAR) Consortium with the goal to build a pathway to test anti-fibrotic medications in stricturing Crohn’s disease. He received the Sherman Emerging Leader Prize in 2019.

David T. Rubin is the Joseph B. Kirsner Professor of Medicine, Professor of Pathology, Chief of the Section of Gastroenterology, Hepatology & Nutrition and Director of the Inflammatory Bowel Disease Center at the University of Chicago Medicine. He earned a medical degree with honors at The University of Chicago Pritzker School of Medicine where he also completed his residency in internal medicine and fellowships in gastroenterology and clinical medical ethics. He is associate faculty member at the MacLean Center for Clinical Medical Ethics, associate investigator at the University of Chicago Comprehensive Cancer Center and a member of the University of Chicago Committee on Clinical Pharmacology and Pharmacogenomics. He is the immediate past Chair of the National Scientific Advisory Committee of the Crohn’s & Colitis Foundation and Deputy Chair of the International Organization for the Study of IBD.
Dr. Rubin’s research is focused on disease modification in IBD including clinical trial designs, novel measures of inflammation and prevention of adverse outcomes, and quality of life in IBD. In 2023, he received both the UChicago Michael Reese Lectureship Award (for outstanding faculty who have developed novel teaching and clinical research that advances healthcare) and the distinguished UChicago Arthur H. Rubenstein Mentorship in Academic Medicine Award. Dr. Rubin is currently a senior editor of the 12 edition of Sleisenger and Fordtran’s Gastrointestinal and Liver Disease, and an author on >600 articles on management of IBD, including the 2019 and 2025 ACG Guidelines for ulcerative colitis.

Raymond K. Cross, MD, MS, AGAF, FACG completed undergraduate training at Washington and Jefferson College and attended medical school at the University of Pittsburgh. He completed internal medicine residency and gastroenterology and Hepatology fellowship training at the University of Maryland Medical Center and Baltimore Veterans Affairs. Prior to fellowship, he was a Chief Medical Resident. He obtained a Master’s Degree in Clinical Research at the University of Maryland, Baltimore. He joined the faculty at the University of Maryland and served as Director of the Inflammatory Bowel Disease Program from 2004 to 2024. In July 2024, he joined the faculty at the Melissa L. Posner Institute for Digestive Health & Liver Disease at Mercy Medical Center where he is Director of the Center for Inflammatory Bowel and Colorectal Diseases.
He has published over 200 peer reviewed manuscripts, review articles, and book chapters and has obtained research funding from the Agency for Healthcare Research and Quality, the Crohn’s and Colitis Foundation, and the American College of Gastroenterology. He is past Chair of the Patient Education and Clinical Research Committees and Clinical Research Alliance for the Foundation. He is the Co-Chair of the Regional Advances in Inflammatory Bowel Disease Course, Scientific Co-Director of the CorEvitas Registry, and past Course Director for the American College of Gastroenterology’s Eastern Regional Course. He is Governor for Maryland for the American College of Gastroenterology, a member of the American College of Gastroenterology’s Research Committee, and Senior Associate Editor of the American Journal of Gastroenterology.

Jessiy Salwen-Deremer, Ph.D., DBSM, is the Director of Behavioral Medicine for Digestive Health at Dartmouth-Hitchcock Medical Center and Assistant Professor of Psychiatry & Medicine at the Geisel School of Medicine at Dartmouth. Dr. Salwen-Deremer earned her Ph.D. in clinical psychology at Stony Brook University and completed her fellowship training in behavioral medicine at the Johns Hopkins School of Medicine. Her areas of clinical expertise include behavioral sleep medicine and gastropsychology. Her research expertise encompasses two areas: understanding the impact of sleep disorders on inflammatory bowel diseases and improving access to gastrointestinal behavioral health care. Across both of these areas, she focuses on the integration of telehealth and remote technologies to enhance patient engagement and participation.

Dr. Audrey Bennett is an Assistant Professor of Medicine in the Division of Gastroenterology, Hepatology, and Nutrition at Vanderbilt University Medical Center in Nashville, Tennessee. She earned her undergraduate degree from the University of Minnesota Duluth and her medical degree from the University of Minnesota. She completed Internal Medicine residency, Gastroenterology fellowship, and Advanced Inflammatory Bowel Disease fellowship at Vanderbilt University Medical Center. During her residency and fellowship, she also received additional training certificates in biomedical ethics and LGBTQ+ health. She specializes in the care of patients with IBD and started as faculty at the Vanderbilt IBD Clinic in 2023.

Jessica Caron, MS is a passionate healthcare professional and patient advocate in the Inflammatory Bowel Disease (IBD) community. As a nationally-recognized speaker on patient advocacy, Jessica shares her experience as a patient living with Crohn’s disease, advocating for a co-facilitated approach to advancing medical care. She blogs and supports patients across the globe through her website, Chronically-Jess.com. Jessica has been a Patient Leader with the Crohn’s and Colitis Foundation’s IBDQorus program, a past member of the Patient Engagement Committee with the Academy on Communication in Healthcare, and is an active advocate through social media. She has a Psychology degree from the University of Maine, a Master of Education in Human Relations from Plymouth State University, and a Master's in Health Care Delivery Science (MHCDS) from Dartmouth College. Jessica currently lives in New Hampshire with her husband and two young sons and works in strategic patient engagement with Snow Companies.

Marla C. Dubinsky received a medical degree from Queen’s University in Canada and completed her clinical pediatric gastroenterology training at Sainte-Justine Hospital, University of Montreal in Quebec, Canada adn her IBD training at Cedars-SInai Medical Center, Los Angeles, CA. Dr. Dubinsky is a proud recipient of the 2022 Sherman Prize for Excellence in Crohn’s and Colitis and a 2024 Jacobi Medallion winner for her contibutions to Mount Sinai. Currently, Dr. Dubinsky is Chief of Pediatric Gastroenterology and Nutrition, as well as the Co-Director of the Susan and Leonard Feinstein Inflammatory Bowel Disease Clinical Center and Co-director of the Marie and Barry Lipman Preconception and Pregnancy Planning Clinic at Mount Sinai Hospital, New York, She is a Professor of both Pediatrics and Medicine at the Icahn School of Medicine, Her primary research focuses on the influence of genetics and immune responses on the variability in clinical presentations, treatment responses and prognosis of IBD. Her other interests include the impact of IBD on fertility and pregnancy. She has lectured widely both nationally and internationally and has published in over 400 peer reviewed journals including New England Journal of Medicine, Lancet, Gastroenterology, The American Journal of Gastroenterology, The Journal of Pediatric Gastroenterology and Nutrition, Inflammatory Bowel Diseases, and of Crohn's and Colitis .

Raymond K. Cross, MD, MS, AGAF, FACG completed undergraduate training at Washington and Jefferson College and attended medical school at the University of Pittsburgh. He completed internal medicine residency and gastroenterology and Hepatology fellowship training at the University of Maryland Medical Center and Baltimore Veterans Affairs. Prior to fellowship, he was a Chief Medical Resident. He obtained a Master’s Degree in Clinical Research at the University of Maryland, Baltimore. He joined the faculty at the University of Maryland and served as Director of the Inflammatory Bowel Disease Program from 2004 to 2024. In July 2024, he joined the faculty at the Melissa L. Posner Institute for Digestive Health & Liver Disease at Mercy Medical Center where he is Director of the Center for Inflammatory Bowel and Colorectal Diseases.
He has published over 200 peer reviewed manuscripts, review articles, and book chapters and has obtained research funding from the Agency for Healthcare Research and Quality, the Crohn’s and Colitis Foundation, and the American College of Gastroenterology. He is past Chair of the Patient Education and Clinical Research Committees and Clinical Research Alliance for the Foundation. He is the Co-Chair of the Regional Advances in Inflammatory Bowel Disease Course, Scientific Co-Director of the CorEvitas Registry, and past Course Director for the American College of Gastroenterology’s Eastern Regional Course. He is Governor for Maryland for the American College of Gastroenterology, a member of the American College of Gastroenterology’s Research Committee, and Senior Associate Editor of the American Journal of Gastroenterology.

Jessiy Salwen-Deremer, Ph.D., DBSM, is the Director of Behavioral Medicine for Digestive Health at Dartmouth-Hitchcock Medical Center and Assistant Professor of Psychiatry & Medicine at the Geisel School of Medicine at Dartmouth. Dr. Salwen-Deremer earned her Ph.D. in clinical psychology at Stony Brook University and completed her fellowship training in behavioral medicine at the Johns Hopkins School of Medicine. Her areas of clinical expertise include behavioral sleep medicine and gastropsychology. Her research expertise encompasses two areas: understanding the impact of sleep disorders on inflammatory bowel diseases and improving access to gastrointestinal behavioral health care. Across both of these areas, she focuses on the integration of telehealth and remote technologies to enhance patient engagement and participation.

Dr. Audrey Bennett is an Assistant Professor of Medicine in the Division of Gastroenterology, Hepatology, and Nutrition at Vanderbilt University Medical Center in Nashville, Tennessee. She earned her undergraduate degree from the University of Minnesota Duluth and her medical degree from the University of Minnesota. She completed Internal Medicine residency, Gastroenterology fellowship, and Advanced Inflammatory Bowel Disease fellowship at Vanderbilt University Medical Center. During her residency and fellowship, she also received additional training certificates in biomedical ethics and LGBTQ+ health. She specializes in the care of patients with IBD and started as faculty at the Vanderbilt IBD Clinic in 2023.

Jessica Caron, MS is a passionate healthcare professional and patient advocate in the Inflammatory Bowel Disease (IBD) community. As a nationally-recognized speaker on patient advocacy, Jessica shares her experience as a patient living with Crohn’s disease, advocating for a co-facilitated approach to advancing medical care. She blogs and supports patients across the globe through her website, Chronically-Jess.com. Jessica has been a Patient Leader with the Crohn’s and Colitis Foundation’s IBDQorus program, a past member of the Patient Engagement Committee with the Academy on Communication in Healthcare, and is an active advocate through social media. She has a Psychology degree from the University of Maine, a Master of Education in Human Relations from Plymouth State University, and a Master's in Health Care Delivery Science (MHCDS) from Dartmouth College. Jessica currently lives in New Hampshire with her husband and two young sons and works in strategic patient engagement with Snow Companies.

Marla C. Dubinsky received a medical degree from Queen’s University in Canada and completed her clinical pediatric gastroenterology training at Sainte-Justine Hospital, University of Montreal in Quebec, Canada adn her IBD training at Cedars-SInai Medical Center, Los Angeles, CA. Dr. Dubinsky is a proud recipient of the 2022 Sherman Prize for Excellence in Crohn’s and Colitis and a 2024 Jacobi Medallion winner for her contibutions to Mount Sinai. Currently, Dr. Dubinsky is Chief of Pediatric Gastroenterology and Nutrition, as well as the Co-Director of the Susan and Leonard Feinstein Inflammatory Bowel Disease Clinical Center and Co-director of the Marie and Barry Lipman Preconception and Pregnancy Planning Clinic at Mount Sinai Hospital, New York, She is a Professor of both Pediatrics and Medicine at the Icahn School of Medicine, Her primary research focuses on the influence of genetics and immune responses on the variability in clinical presentations, treatment responses and prognosis of IBD. Her other interests include the impact of IBD on fertility and pregnancy. She has lectured widely both nationally and internationally and has published in over 400 peer reviewed journals including New England Journal of Medicine, Lancet, Gastroenterology, The American Journal of Gastroenterology, The Journal of Pediatric Gastroenterology and Nutrition, Inflammatory Bowel Diseases, and of Crohn's and Colitis .