¹Amsterdam UMC, VU Medical Center, Gastroenterology and Hepatology, Amsterdam, The Netherlands, ²Radboud University Medical Center, Gastroenterology and Hepatology, Nijmegen, The Netherlands, ³University Medical Center Utrecht, Gastroenterology and Hepatology, Utrecht, The Netherlands, ⁴Amsterdam UMC, Academical Medical Center, Gastroenterology and Hepatology, Amsterdam, The Netherlands, ⁵Erasmus University Medical Center, Gastroenterology and Hepatology, Rotterdam, The Netherlands, ⁶Leiden University Medical Center, Gastroenterology and Hepatology, Leiden, The Netherlands, ⁷Maastricht University Medical Center, Gastroenterology and Hepatology, Maastricht, The Netherlands, ⁸University Medical Center Groningen and University of Groningen, Gastroenterology and Hepatology, Groningen, The Netherlands

¹IBD Unit, "Villa Sofia-Cervello" Hospital, Palermo, Italy

¹St James's Hospital, Department of Gastroenterology, Dublin, Ireland, ²Connolly Hospital Blanchardstown, Gastroenterology, Dublin, Ireland, ³Beaumont Hospital, Gastroenterology, Dublin, Ireland, ⁴INITIative, Investigator Network Inflammatory bowel disease Therapy in Ireland, Dublin, Ireland, ⁵St James's Hospital, Gastroenterology, Dublin, Ireland, ⁶Beacon Hospital, Gastroenterology, Dublin, Ireland

¹Haeundae Paik Hospital, Division of Gastroenterology, Department of Internal Medicine, Busan, South Korea, ²Yonsei University College of Medicine, Seoul, Korea, Division of Gastroenterology, Department of Internal Medicine, Seoul, South Korea

¹Medical University of Lodz, Department of Gastroenterology, Lodz, Poland, ²Medical University of Lodz, Department of General and Colorectal Surgery, Lodz, Poland, ³Medical University of Lodz, Department of Biochemistry, Lodz, Poland

¹Tillotts Pharma AG, Medical Affairs, Rheinfelden, Switzerland, ²Tillotts Pharma, Medicines Management, Rheinfelden, Switzerland

¹University of Sheffield, Academic Department of Gastroenterology, Sheffield, UK, ²University of Sheffield, Academic Department of Psychology, Sheffield, UK

¹University of Pisa, Department of new technologies and translational sciences in medicine and surgery, Pisa, Italy, ²University of Pisa, Department of clinical and experimental medicine, Pisa, Italy, ³Pisa University Hospital, Department of General Surgery and Gastroenterology, Pisa, Italy

¹Oslo University Hospital, Department of Gastroenterology, Oslo, Norway, ²University of Oslo, Institute of Clinical Medicine, Oslo, Norway, ³University of Oslo, Institute of Health and Society, Oslo, Norway

¹Henri Mondor Hospital, Gastroenterology, Creteil, France, ²Hopital Nord, Gastroenterology, Marseille, France, ³CHU Nancy, Gastroenterology, Nancy, France, ⁴CHU Nice, Gastroenterology, Nice, France, ⁵CHU Lille, Gastroenterology, Lille, France, ⁶CHU Saint-Etienne, Gastroenterology, Saint-Etienne, France, ⁷CHU Clermont-Ferrand, Gastroenterology, Clermont-Ferrand, France, ⁸CHU Beaujon, Gastroenterology, Clichy, France, ⁹CHU Nantes, Gastroenterology, Nantes, France, ¹⁰CHU Montpellier, Gastroenterology, Montpellier, France, ¹¹CHU Lariboisiere, Gastroenterology, Paris, France, ¹²CHU Bicetre, Gastroenterology, Kremlin-Bicetre, France, ¹³CHU Saint-Antoine, Gastroenterology, Paris, France, ¹⁴CHU Lyon, Gastroenterology, Lyon, France, ¹⁵CHU Bordeaux, Gastroenterology, Bordeaux, France, ¹⁶CHU Saint-Louis, Gastroenterology, Paris, France, ¹⁷CHU Rouen, Gastroenterology, Rouen, France, ¹⁸CHU Toulouse, Gastroenterology, Toulouse, France, ¹⁹CHU Besancon, Gastroenterology, Besancon, France, ²⁰CHU Caen, Gastroenterology, Caen, France, ²¹CHU Tours, Gastroenterology, Tours, France, ²²CHU Bichat, Gastroenterology, Paris, France, ²³CHU rennes, Gastroenterology, Rennes, France, ²⁴CHU COchin, Gastroenterology, Paris, France, ²⁵CHU Amiens, Gastroenterology, Amiens, France

¹Northwestern University, Feinberg School of Medicine, Chicago, IL, USA, ²University of Chicago Medicine, Inflammatory Bowel Disease Center, Chicago, IL, USA, ³University of Bologna, Department of Medical and Surgical Sciences (DIMEC), Bologna, Italy, ⁴Pfizer Inc., Collegeville, PA, USA, ⁵University of Calgary, Calgary, AB, Canada

¹Shiga University of Medical Science, Department of gastroenterology, Otsu, Japan, ²Shiga University of Medical Science, Division of Clinical Nutrition, Otsu, Japan, ³Shiga University of Medical Science, Department of Comprehensive Internal Medicine, Otsu, Japan

¹Lyon-Sud Hospital, Gastroenterology, Pierre Bénite, France, ²CHRU Lille, Gastroenterology, Lille, France, ³CHU Bordeaux, Gastroenterology, Bordeaux, France, ⁴CHU Saint-Etienne, Gastroenterology, Saint-Etienne, France, ⁵CHU Toulouse, Gastroenterology, Toulouse, France, ⁶CHU Tours, Gastroenterology, Tours, France, ⁷CHU Nantes, Gastroenterology, Nantes, France, ⁸CHU Nancy, Gastroenterology, Nancy, France, ⁹CHU Nice, Gastroenterology, Nice, France, ¹⁰CHU Clermont-Ferrand, Gastroenterology, Clermont-Ferrand, France, ¹¹Assistance Publique-Hôpitaux de Marseille, Gastroenterology, Marseille, France, ¹²Beaujon Hospital, Gastroenterology, Paris, France, ¹³Saint-Louis Hospital, Gastroenterology, Paris, France, ¹⁴CHU Montpellier, Gastroenterology, Montpellier, France, ¹⁵CHU Caen, Gastroenterology, Caen, France, ¹⁶CHU Besançon, Gastroenterology, Besançon, France, ¹⁷Bicêtre Hospital, Gastroenterology, Le Kremlin-Bicêtre, France, ¹⁸CHU Saint-Etienne, Immunology, Saint-Etienne, France, ¹⁹Paris Diderot University, Paris, France

¹APHP-Hôpital Beaujon, Department of Gastroenterology, Clichy, France, ²APHP-Hôpital Bicêtre, Department of Gastroenterology, Le Kremlin Bicêtre, France, ³Bordeaux University Hospital, Department of Gastroenterology, Bordeaux, France, ⁴Saint-Etienne University Hospital, Department of Gastroenterology, Saint Etienne, France, ⁵Intercommunal Creteil Hospital Center, Department of Gastroenterology, Créteil, France, ⁶AP-HP, Cochin Hospital, Department of Gastroenterology, Paris, France, ⁷AP-HP, Hôpital Henri Mondor, Department of Gastroenterology, Créteil, France, ⁸Rennes University Hospital, Department of Gastroenterology, Rennes, France, ⁹Angers University Hospital, Department of Gastroenterology, Angers, France, ¹⁰Amiens University Hospital, Department of Gastroenterology, Amiens, France, ¹¹Lille University Hospital, Department of Gastroenterology, Lille, France, ¹²Nancy University Hospital, Department of Gastroenterology, Nancy, France, ¹³Institut Mutualiste Montsouris, Department of Gastroenterology, Paris, France, ¹⁴Caen University Hospital, Department of Gastroenterology, Caen, France

¹King's College Hospital, London, UK, ²Basildon and Thurrock University Hospital, Essex, UK

¹University of Calgary, Medicine, Calgary, Canada

¹Hospital Universitario Central de Asturias, Gastroenterology, Oviedo, Spain, ²Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain, ³Hospital Universitario Central de Asturias, Respiratory, Oviedo, Spain, ⁴Hospital Universitario Central de Asturias, Microbiology, Oviedo, Spain

¹Interdisciplinary Crohn Colitis Centre Rhein-Main, Frankfurt/Main, Germany, ²Hacettepe University, Ankara, Turkey, ³Pharmazentrum Frankfurt, Hospital of the Goethe University, Institute of Pharmacology and Toxicology, Frankfurt/Main, Germany, ⁴Agaplesion Markuskrankenhaus, Frankfurt/Main, Germany, ⁵DGD Clinics Sachsenhausen, Frankfurt/Main, Germany

¹Yokohama City University Medical Centre, Inflammatory Bowel Disease Center, Yokohama, Japan, ²Yokohama City University Graduate School of Medicine, Department of Gastroenterology, Yokohama, Japan

¹The sixth hospital affiliated to sun yat-sen university, Gastroenterology dept., Guangzhou, China, ²Run run shaw hospital affiliated of zhejiang university, Gastroenterology dept., Hangzhou, China