¹Children’s Memorial Health Institute, Department of Paediatric Surgery and Organ Transplantations, Warszawa, Poland, ²Children’s Memorial Health Institute, Department of Gastroenterology, Hepatology, Feeding Disorders and Paediatrics, Warszawa, Poland

¹Ipsos healthcare, London, United Kingdom, ²Ipsos Healthcare, London, United Kingdom

¹Mount Sinai Hospital, Zane Cohen Centre for Digestive Diseases; Division of Gastroenterology, Department of Medicine, University of Toronto, Toronto, Canada, ²Institute of Gastroenterology and Liver Diseases, Emek Medical Centre, Afula, Israel

¹Henri Mondor Hospital, Gastroenterology, Creteil, France, ²Hospital Nord, Department of Gastroenterology and Hepatology, Marseille, France, ³APHP Beaujon, Department of Gastroenterology, Clichy, France, ⁴Archet 2 Hospital, Department of Gastroenterology, Nice, France, ⁵CHRU Lille, Department of Gastroenterology, Lille, France, ⁶CHU Nancy, Department of Gastroenterology and Hepatology, Vandoeuvre-Lès-Nancy, France, ⁷CHU Hotel Dieu, Department of Gastroenterology, Nantes, France, ⁸CHU Estaing, Department of Gastroenterology, Clermont-Ferrand, France, ⁹CHU Bicêtre, Department of Gastroenterology, Le Kremlin-Bicêtre, France, ¹⁰APHP St. Antoine Hospital, Department of Gastroenterology, Paris, France, ¹¹Hospital Edouard Herriot, Department of Gastroenterology and Hepatology, Lyon, France, ¹²University of Saint Etienne, Department of Gastroenterology, Saint Etienne, France, ¹³Hospital Lariboisière, Department of Gastroenterology, Paris, France, ¹⁴CHU Montpellier Saint Eloi Hospital, Department of Gastroenterology, Montpellier, France, ¹⁵CHU de Toulouse Hospital de Rangueil, Department of Gastroenterology, Toulouse, France, ¹⁶Chu Tours, Department of Gastroenterology and Hepatology, Tours, France, ¹⁷CHU Rouen, Department of Gastroenterology, Rouen, France, ¹⁸Hospital Bichat Claude Bernard, Department of Gastroenterology, Paris, France, ¹⁹Amiens University Hospital, Department of Gastroenterology, Amiens, France, ²⁰Grenoble, gastroenterologie, Grenoble, France

¹Pfizer Inc, Groton, United States, ²Pfizer Inc, Shanghai, China, ³Pfizer Inc, Cambridge, United States, ⁴Pfizer Inc, Collegeville, Pennsylvania, United States

¹Marmara University, Psychiatry, Istanbul, Turkey, ²Marmara University, Internal Medicine, Istanbul, Turkey, ³Marmara University, Gastroenterology, Istanbul, Turkey, ⁴Marmara University, Medical Student, Istanbul, Turkey

¹Örebro University, Department of Gastroenterology, Faculty of Medicine and Health, Örebro, Sweden, ²Örebro University, Clinical Epidemiology and Biostatistics, Faculty of Medicine and Health, Örebro, Sweden, ³Uppsala University, Department of Medical sciences, Gastroenterology Research Group, Uppsala, Sweden

¹Yokohama City University Medical Centre, Inflammatory Bowel Disease Centre, Yokohama, Japan, ²Yokohama City University Medical Centre, Department of Laboratory Medicine and Clinical Investigation, Yokohama, Japan, ³Yokohama City University Medical Centre, Gastroenterology Centre, Yokohama, Japan

¹University Hospital of Nancy, Department of Gastroenterology, Nancy, France, ²European Federation of Crohn’s and Ulcerative Colitis Associations, Medical Writer, Brussels, Belgium, ³Humanitas University, Department of Gastroenterology, Milan, Italy, ⁴Saint-Étienne University Hospital, Gastroenterology and Hepatology, Saint-Étienne, France, ⁵European Federation of Crohn’s and Ulcerative Colitis Associations, Brussels, Belgium

¹Gastrointestinal Society, Vancouver, Canada, ²University of Alberta, Zeidler Ledcor Centre, Department of Medicine, Division of Gastroenterology, Edmonton, Canada, ³University of British Columbia, Medicine, Division of Gastroenterology, St. Paul’s Hospital, Vancouver, Canada, ⁴McMaster University Medical Centre, Department of Gastroenterology, Hamilton, Canada, ⁵University of Calgary, Department of Gastroenterology, Foothills Medical Centre, Calgary, Canada, ⁶CHUM Centre Hospitalier de l’Université de Montréal, Hôpital Maisonneuve-Rosemont, Medicine, Montréal, Canada

Academic Medical Centre, Surgery, Amsterdam, Netherlands

Hospital for Sick Children, Division of Gastroenterology, Hepatology and Nutrition, Toronto, Canada

CHU de Lille, Department of Gastroenterology, Lille, France

¹University of Otago, Department of Surgery, Christchurch, New Zealand, ²University of Otago, Department of Medicine, Dunedin, New Zealand, ³University of Otago, Department of Medicine, Christchurch, New Zealand, ⁴University of Otago, Department of Paediatrics, Christchurch, New Zealand, ⁵European Federation of Crohn’s and Ulcerative Colitis Associations, Medical Writing, Brussels, Belgium

¹University of Otago, Department of Surgery, Christchurch, New Zealand, ²University of Otago, Department of Medicine, Dunedin, New Zealand, ³University of Otago, Department of Medicine, Christchurch, New Zealand, ⁴University of Otago, Christchurch, Department of Population Health, Christchurch, New Zealand, ⁵University of New South Wales, Medicine, Sydney, Australia

¹AO Ordine Mauriziano, Gastroenterology Unit, Torino, Italy, ²ARNAS Ospedale Civico, Gastroenterology Unit, Palermo, Italy, ³IRCCS Ospedale Maggiore, Gastroenterology Unit, Milano, Italy, ⁴Tor Vergata University, Gastroenterology Department, Roma, Italy, ⁵EFFCA and AMICI Onlus, Palermo, Italy, ⁶Bolzano Central Hospital, Department of Gastroenterology, Bolzano, Italy, ⁷Salesian University Institute, Venezia, Italy

Royal Victoria Infirmary, Colorectal Surgery, Newcastle Upon Tyne, United Kingdom

¹UCLA Centre for Inflammatory Bowel Diseases, Division of Digestive Diseases, University of California, Los Angeles, California, United States, ²Academic Medical Centre, Amsterdam, Department of Medical Oncology, Amsterdam, Netherlands

Hamamatsu University School of Medicine, Second Department of Surgery, Hamamatsu, Japan

¹Semmelweis University, First Department of Medicine, Budapest, Hungary, ²National Health Insurance Fund (OEP), Strategic Analysis Department, Budapest, Hungary