¹University Hospital Zurich, Division of Gastroenterology and Hepatology, Zurich, Switzerland, ²University of Lausanne, IUMSP, Lausanne, Switzerland, ³Klinik Hirslanden, Department of Gastroenterology, Zurich, Switzerland, ⁴University of Bern, Institute of Social and Preventive Medicine, Bern, Switzerland, ⁵CHUV - Centre Hospitalier Universitaire Vaudois, Department of Gastroenterology, Lausanne, Switzerland, ⁶Center of Gastroenterology and Hepatology, Zurich, Switzerland, ⁷University Hospital Zurich, Gastroenterology and Hepatology, Zurich, Switzerland

¹Erasmus MC, Gastroenterology and Hepatology, Rotterdam, The Netherlands, ²University Medical Center Groningen and University of Groningen, Gastroenterology and Hepatology, Groningen, The Netherlands, ³Academic Medical Center Amsterdam, Gastroenterology and Hepatology, Amsterdam, The Netherlands, ⁴University Hospitals Leuven, KU Leuven, Gastroenterology, Leuven, Belgium, ⁵Franciscus Hospital and Vlietland Hospital, Gastroenterology and Hepatology, Rotterdam, The Netherlands, ⁶Leiden University Medical Center, Gastroenterology and Hepatology, Leiden, The Netherlands, ⁷Toronto General Hospital, Center for Liver Disease, Toronto, Canada

¹University of California San Diego, Division of Gastroenterology, La Jolla, CA, USA, ²Hospital Clínic de Barcelona, IDIBAPS, CIBERehd, Barcelona, Spain, ³Academic Medical Centre, Department of Gastroenterology, Amsterdam, The Netherlands, ⁴Icahn School of Medicine at Mount Sinai, Dr. Henry D. Janowitz Division of Gastroenterology, New York, NY, USA, ⁵Pfizer Inc., Collegeville, PA, USA

¹Northwestern University, Evanston, IL, USA, ²University of Calgary, Calgary, AB, Canada, ³Humanitas Research Hospital, IBD Center, Department of Gastroenterology, Rozzano, Milan, Italy, ⁴Beth Israel Deaconess Medical Center and Harvard Medical School, Department of Medicine and Division of Gastroenterology, Boston, MA, USA, ⁵Medical University of Vienna, Department of Internal Medicine III, Vienna, Austria, ⁶University of Michigan, Ann Arbor, MI, USA, ⁷Pfizer Inc., Collegeville, PA, USA

¹Perelman School of Medicine of the University of Pennsylvania, Division of Gastroenterology, Philadelphia, PA, USA, ²Washington University in Saint Louis, Division of Gastroenterology, Saint Louis, MO, USA, ³University of Zürich, Department of Gastroenterology and Hepatology, Zürich, Switzerland, ⁴Pfizer Inc., Collegeville, PA, USA, ⁵Hospital Clínic de Barcelona, IDIBAPS, CIBERehd, Barcelona, Spain

¹Icahn School of Medicine at Mount Sinai, Dr. Henry D. Janowitz Division of Gastroenterology, New York, NY, USA, ²Beth Israel Deaconess Medical Centre, Division of Gastroenterology, Boston, MA, USA, ³Presidio Columbus Fondazione Policlinico Gemelli Università Cattolica, IBD Unit, Rome, Italy, ⁴McMaster University, Division of Gastroenterology, Department of Medicine, Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada, ⁵The Royal London Hospital, Barts Health NHS Trust, Department of Gastroenterology, London, UK, ⁶University of California San Diego, Division of Gastroenterology, La Jolla, CA, USA, ⁷Humanitas Research Hospital, IBD Center, Department of Gastroenterology, Rozzano, Milan, Italy, ⁸Pfizer Inc., New York, NY, USA, ⁹Pfizer Inc., Collegeville, PA, USA

¹Western University, Robarts Clinical Trials, London, ON, Canada, ²Icahn School of Medicine at Mount Sinai Hospital, Department of Pediatrics and Medicine, New York, NY, USA, ³Charles University, Prague, Czech Republic, ⁴Pfizer Inc., Collegeville, PA, USA

¹Manchester Royal Infirmary/University of Manchester, Gastroenterology, Manchester, UK, ²University of Greenwich/Barts Heath, School of Nursing/Gastroenterology, London, UK, ³McMasterUniversity, Digestive Diseases, Hamilton, Canada, ⁴Royal Free Hospital, Gastroenterology, London, UK, ⁵Karolinska Institutet Danderyd Hospital, Stockholm Gastro Centre, Stockholm, Sweden, ⁶Hull and East Yorkshire Hospitals, Gastroenterology, Hull, UK, ⁷Coastal Digestive Health, IBD Clinic, Mountain Creek, Australia, ⁸St Thomas' Hospital, Gastroenterology, London, UK, ⁹Gastroenterologische Gemeinschaftspraxis, Gastroenterology, Minden, Germany, ¹⁰Ijsselland Hospital, Department of Surgery, ZC Capelle A/D Ijssel, The Netherlands, ¹¹AZ Delta Roeselare-Menen, Gastroenterology, Roeselare, Belgium, ¹²LUMC, Gastroenterology, Leiden, The Netherlands, ¹³Leiden University Medical Centre, Gastroenterology, Leiden, The Netherlands, ¹⁴Barts and The London NHS Trust, Gastroenterology, London, UK, ¹⁵Gastroenterology and Hepatology Aarhus University, Department of Medicine, Aarhus, Denmark

¹Montpellier University Hospital, Pediatric Gastroenterology and Nutrition, Montpellier, France, ²Lille University Hospital, Epidemiology, Lille, France, ³Toulouse University Hospital, Pediatric Gastroenterology and Nutrition, Toulouse, France, ⁴Amiens University Hospital, Gastroenterology, Amiens, France, ⁵Rouen University Hospital, Gastroenterology, Rouen, France, ⁶Armand Trousseau University Hospital, Pediatric Gastroenterology and Nutrition, Paris, France, ⁷Lille University Hospital, Gastroenterology, Lille, France, ⁸Lille University Hospital, Pediatric Gastroenterology and Nutrition, Lille, France, ⁹Montpellier University Hospital, Gastroenterology, Montpellier, France

¹University Medical Center Groningen, Paediatric Gastroenterology Hepatology and Nutrition, Groningen, The Netherlands, ²University Medical Center Groningen, Laboratory Medicine, Groningen, The Netherlands, ³University Medical Center Groningen, Microbiology, Groningen, The Netherlands, ⁴Academic Medical Center, Paediatric Gastroenterology Hepatology and Nutrition, Amsterdam, The Netherlands, ⁵Wilhemina Kinder Ziekenhuis, Paediatric Gastroenterology Hepatology and Nutrition, Utrecht, The Netherlands, ⁶VU Medical Center, Paediatric Gastroenterology Hepatology and Nutrition, Amsterdam, The Netherlands, ⁷Isala Clinic, Paediatrics, Zwolle, The Netherlands, ⁸University Medical Center Groningen, Gastroenterology and Hepatology, Groningen, The Netherlands, ⁹Rijnstate Hospital, Paediatrics, Arnhem, The Netherlands, ¹⁰Medisch Spectrum Twente, Paediatrics, Enschede, The Netherlands, ¹¹Erasmus Medical Center – Sophia Kinder Ziekenhuis, Paediatric Gastroenterology Hepatology and Nutrition, Rotterdam, The Netherlands, ¹²Amphia Ziekenhuis, Paediatrics, Breda, The Netherlands, ¹³Haga Hospital, Paediatrics, The Hague, The Netherlands, ¹⁴Leiden University Medical Center, Paediatric Gastroenterology Hepatology and Nutrition, Leiden, The Netherlands, ¹⁵University Medical Center Groningen, Epidemiology, Groningen, The Netherlands

North Zealand University Hospital, Frederikssund, Denmark

¹Dartmouth-Hitchcock Medical Center, Lebanon, USA, ²Dartmouth-Hitchcock Medical Center, Medicine, Lebanon, USA, ³BDJ Solutions, Boston, USA, ⁴Delta Modelling, Chicago, USA, ⁵Association François Aupetit, Paris, France, ⁶Hôpital Saint-Antoine, Paris, France, ⁷Icahn School of Medicine at Mount Sinai, New York, USA, ⁸University Hospital CHU of Liège, Liège, Belgium

¹Rambam Health Care Campus, Haifa, Israel, ²Sheba Medical Center, Gastroenterology, Ramat Gan, Israel, ³IDF Medical Corps, Tel Hashomer, Israel, ⁴Schneider Children's Medical Center, Gastroenterology, Petach Tikva, Israel

¹Maastricht University Medical Centre, Department of Internal Medicine, Division of Gastroenterology and Hepatology, Maastricht, The Netherlands, ²Maastricht University Medical Centre, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands, ³Zuyderland Medical Centre, Department of Gastroenterology and Hepatology, Sittard-Geleen/Heerlen, The Netherlands

¹AZ Delta Roeselare Menen, Department of Gastroenterology, Roeselare, Belgium, ²Jan Yperman Hospital, Department of Gastroenterology, Ieper, Belgium, ³Sint-Jozefskliniek, Department of Gastroenterology, Izegem, Belgium, ⁴AZ Groeninge, Department of Gastroenterology, Kortrijk, Belgium, ⁵AZ St. Lucas, Department of Gastroenterology, Ghent, Belgium, ⁶AZ St. Lucas, Department of Gastroenterology, Brugge, Belgium

¹Radboudumc, Nijmegen, The Netherlands, ²Maastricht University Medical Center (MUMC), Maastricht, The Netherlands, ³Leiden University Medical Center (LUMC), Department of Gastroenterology and Hepatology, Leiden, The Netherlands, ⁴Erasmus Medical Center, Rotterdam, The Netherlands, ⁵VU University Medical Centre Institute of Education, Department of Gastroenterology and Hepatology, Room J393, Amsterdam, The Netherlands, ⁶University Medical Center Groningen, Groningen, The Netherlands, ⁷University Medical Centre Utrecht, Utrecht, The Netherlands, ⁸Academic Medical Center (AMC), Department of Gastroenterology and Hepatology, Amsterdam, The Netherlands, ⁹Radboudumc, Department of Gastroenterology and Hepatology, Nijmegen, The Netherlands

¹Beaujon Hospital, APHP, Colorectal Surgery, Clichy, France, ²CHU Bicetre, APHP, Department of Oncologic and Digestive Surgery, Le Kremlin-Bicetre, France, ³CHRU Lille, Department of Digestive Surgery and Transplantation, Lille, France, ⁴St Antoine Hospital, APHP, Digestive Surgery, Paris, France, ⁵CHU Bordeaux, Digestive Surgery, Bordeaux, France, ⁶CHRU Nancy, Digestive Surgery, Nancy, France, ⁷CHU Lyon-Sud, Digestive Surgery, Lyon, France, ⁸CHU Marseille-Nord, Digestive Surgery, Marseille, France, ⁹St Louis Hospital, APHP, Digestive Surgery, Paris, France, ¹⁰CHU Rennes, Digestive Surgery, Rennes, France, ¹¹CHU Nice, Digestive Surgery, Nice, France, ¹²CHU Toulouse, Digestive Surgery, Toulouse, France, ¹³Lariboisière Hospital, APHP, Digestive Surgery, Paris, France, ¹⁴Institut Mutualiste Montsouris, Digestive Surgery, Paris, France, ¹⁵CHU Rouen, Digestive Surgery, Rouen, France, ¹⁶CHU Nantes, Digestive Surgery, Nantes, France, ¹⁷CHU Grenoble, Digestive Surgery, Grenoble, France, ¹⁸Hopital St Joseph, Digestive Surgery, Paris, France, ¹⁹CHU Montpellier, Digestive Surgery, Montpellier, France, ²⁰Lariboisière Hospital, APHP, Departement of Clinical Research, Paris, France

University of Calgary, IBD Unit, Division of Gastroenterology and Hepatology, Calgary, Canada

¹Hospital Clinic de Barcelona, IDIBAPS, CIBERehd, Barcelona, Spain, ²The Royal London, Barts Health NHS Trust, London, UK, ³Internistische Gemeinschaftspraxis, Leipzig, Germany, ⁴Faculty of Medicine, Jena University, Jena, Germany, ⁵Lund University, Malmo, Sweden, ⁶Icahn School of Medicine at Mount Sinai, New York, USA, ⁷Merck Sharpe and Dohme, Kriens, Switzerland, ⁸Merck & Co., Inc., Kenilworth, USA, ⁹Universitätsklinik für Innere Medizin III, Vienna, Austria