¹University of Szeged, First Department of Medicine, Szeged, Hungary, ²University of Szeged, Department of Medical Physics and Informatics, Szeged, Hungary, ³University of Szeged, Institute of Laboratory Medicine, Szeged, Hungary, ⁴University of Debrecen, Department of Laboratory Medicine, Debrecen, Hungary, ⁵University of Debrecen, Department of Internal Medicine, Debrecen, Hungary, ⁶University of Szeged, 2nd Department of Internal Medicine, Debrecen, Hungary

¹Sackler Faculty of Medicine Tel Aviv University, Tel Aviv, Israel, ²Meir Hospital, Gastroenterology and Liver disease, Kfar Saba, Israel, ³Assaf Harofeh, The Kamila Gonczarowski Institute for Gastroenterology and Liver Diseases, Zerifin, Israel, ⁴Shaare Zedek Medical Center, Gastroenterology institute, Jerusalem, Israel, ⁵Sackler Faculty of Medicine Tel Aviv University, Department of Epidemiology and Preventive Medicine, Tel aviv, Israel

¹Medical University Varna, Clinic of Hepatogastroenterology, St. Marina University Hospital, Varna, Bulgaria, ²Medical University Varna, Department of General Medicine and Clinical Laboratory, Varna, Bulgaria

¹Tehran university ofMedical Sciences, Tehran, Iran, Islamic Republic of

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

¹University Hospital Schleswig-Holstein, Kiel, Germany, ²Sheba Medical Center, Tel Hashomer, Israel, ³Asan Medical Center, Seoul, South Korea, ⁴University Hospital KU Leuven, Leuven, Belgium, ⁵Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea, ⁶Celltrion, Inc., Incheon, South Korea, ⁷Medical University Vienna, Vienna, Austria

¹University of Birmingham, Birmingham, UK, ²Janssen Scientific Affairs, LLC, Horsham, USA, ³Janssen Research and Development, LLC, Spring House, USA, ⁴University Hospital Gasthuisberg, Leuven, Belgium, ⁵Icahn School of Medicine at Mount Sinai, New York, USA

¹Icahn School of Medicine at Mount Sinai, New York, USA, ²Janssen Global Services, LLC, Malvern, USA, ³Janssen Research & Development, LLC, Spring House, USA, ⁴Concord Hospital, Sydney, Australia, ⁵Macquarie University Hospital, Sydney, Australia, ⁶Humanitas Research Hospital, Milan, Italy

¹IBD Unit, Presidio Columbus, Fondazione Policlinico Gemelli Università Cattolica, Rome, Italy, ²Internal Medicine, Gastroenterology and Liver Unit, Fondazione Policlinico Universitario A. Gemelli, Rome, Italy, ³Division of Gastroenterology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy, ⁴Gastroenterology Unit, RhoHospital, Rho, Italy, ⁵MSD Italia, Rome, Italy, ⁷Division of Gastroenterology, Casa Sollievo della Sofferenza Hospital, IRCCS, San Giovanni Rotondo, Foggia, Italy, ⁸IBD and Pelvic Floor Unit, Azienda Ospedaliera per l'Emergenza, Ospedale Cannizzaro, Catania, Italy

¹Guy's & St Thomas' Hospital, Gastroenterology, London, UK, ²Guy's & St Thomas' Hospital, Viapath Laboratories, London, UK

¹AOU G. Martino, Department of Clinical and Experimental Medicine, IBD Unit, University of Messina, Messina, Italy, ²AOU G. Martino, Vaccination Centre, Department of Biomedical Sciences and Morphological and Functional Imaging, University of Messina, Messina, Italy

¹Icahn School of Medicine at Mount Sinai Hospital, Department of Pediatrics and Medicine, New York, NY, USA, ²University of British Columbia, Division of Gastroenterology, Department of Medicine, Vancouver, BC, Canada, ³Presidio Columbus Fondazione Policlinico A. Gemelli IRCCS – Università Cattolica del Sacro Cuore, IBD Unit, Rome, Italy, ⁴Pfizer Inc., Collegeville, PA, USA, ⁵Pfizer Inc., New York, NY, USA

¹University Medical Centre Ljubljana, Department of Gastroenterology, Ljubljana, Slovenia, ²University of Ljubljana, Faculty of Pharmacy, Ljubljana, Slovenia, ³University Medical Centre Ljubljana, Department of Dermatology, Ljubljana, Slovenia

¹Robarts Clinical Trials, Western University, London, Canada, ²University of California - San Diego, San Diego, USA, ³Academic Medical Center, Amsterdam, The Netherlands, ⁴Feinberg School of Medicine, Chicago, USA, ⁵Atlanta Gastroenterology Associates, Atlanta, USA, ⁶University of Leuven, Leuven, Belgium, ⁷University of Calgary, Calgary, Canada, ⁸Celgene Corporation, Summit, USA

¹Manchester University NHS Foundation Trust, Department of Gastroenterology, Manchester, UK

¹Shaare Zedek Medical Center, Jerusalem, Israel, ²The Hebrew University of Jerusalem, Jerusalem, Israel, ³Edith Wolfson Medical Center, Holon, Israel, ⁴Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel, ⁵Ha'Emek Medical Center, Afula, Israel, ⁶The Ruth and Bruce Rappaport School of Medicine, Technion - Israel Institute of Technology, Haifa, Israel, ⁷Hadassah-Hebrew University Medical Center, Jerusalem, Israel, ⁸Rambam Medical Center, Haifa, Israel, ⁹French Hospital, Nazareth, Israel, ¹⁰Baruch Padeh Medical Center, Poriya, Israel, ¹¹Bar-Ilan University, Galille, Israel, ¹²Kaplan Medical Center, Rehovot, Israel, ¹³Schneider Children's Medical Center, Petach Tikva, Israel, ¹⁴Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel, ¹⁵Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, ¹⁶Assaf Harofeh Medical Center, Zerifin, Israel

¹Università degli studi di Roma, Tor Vergata, Roma, Italy, ²Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Università degli studi di Milano, Milano, Italy, ³Fondazione Policlinico Universitario Gemelli IRCCS, Università Cattolica del Sacro Cuore, Roma, Italy, ⁴Ospedali Riuniti Villa Sofia-Cervello, Palermo, Italy, ⁵Università degli studi di Messina, Messina, Italy, ⁶Azienda Ospedaliera Brotzu, Cagliari, Italy, ⁷Università degli studi di Cagliari, Cagliari, Italy, ⁸Università Federico II di Napoli, Napoli, Italy

¹Eli Lilly and Company, Indianapolis, USA

¹Amiens University Hospital, Gastro-enterology, Amiens, France, ²Amiens University Hospital, Amiens, France

¹Tel Aviv Medical Center, Gastroenterology and liver diseases, Tel Aviv, Israel, ²Tel Aviv Medical Center, Department of Surgery, Tel Aviv, Israel