Hospital Universitario La Paz, Gastroenterology, Madrid, Spain

¹NIHR Nottingham Digestive Diseases Biomedical Research Centre, Gastroenterology, Nottingham, UK, ²University Hospitals Leuven, Gastroenterology and Hepatology, Leuven, Belgium, ³KU Leuven, Chronic Diseases, Metabolism and Ageing, TARGID-IBD Unit, Leuven, Belgium, ⁴University of Turin, Department of Medical Sciences, Turin, Italy, ⁵Hospital Universitario de Fuenlabrada and Instituto de Investigacion de La Paz IdiPaz, Gastroenterology, Madrid, Spain, ⁶Internistische Gemeinschaftspraxis, Gastroenterology, Leipzig, Germany, ⁷University of Ioannina School of Health Sciences, Division of Gastroenterology, Department of Internal Medicine- Faculty of Medicine, Ioannina, Greece, ⁸University of Rzeszow, Department of Gastroenterology with IBD Unit of Clinical Hospital 2, Rzeszow, Poland, ⁹University of Szeged, First Department of Medicine, Szeged, Hungary, ¹⁰Venizeleio General Hospital, Gastroenterology, Heraklion, Greece

¹Division of Gastroenterology, Department of Internal Medicine, University of Debrecen, Debrecen, Hungary, ²Institute for Biotechnology, Faculty of Environment and Natural Sciences, Brandenburg University of Technology Cottbus-Senftenberg, Senftenberg, Germany

North-Western State Medical University n.a. I.I.Mechnikov, the Chair of the Propedeutics of Internal Diseases, Gastroenterology and Dietology n.a. S.M. Riss, Saint Petersburg, Russian Federation

¹Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands, ²Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands

¹Medical University of Vienna, Department of Gastroenterology and Hepatology, Vienna, Austria, ²Medical University of Vienna, Department of Epidemiology, Vienna, Austria, ³Hospital Brothers of St. John of God St. Veit an der Glan, Department of Internal Medicine, St. Veit an der Glan, Austria, ⁴Darm Praxis Salzburg, Darm Praxis Salzburg, Salzburg, Austria, ⁵Medical University of Graz, Department of Gastroenterology and Hepatology, Graz, Austria, ⁶Hospital Wels-Grieskirchen, Department of Internal Medicine I, Wels, Austria, ⁷Medical University of Innsbruck, Department of Internal Medicine I, Innsbruck, Austria, ⁸Hospital Rudolfstiftung, Department of Internal Medicine IV, Vienna, Austria, ⁹Hospital Oberpullendorf, Department of Internal Medicine, Oberpullendorf, Austria, ¹⁰Universitätsklinikum St. Pölten, Department of Internal Medicine II, St. Pölten, Austria, ¹¹Hospital Wels-Grieskirchen, Department of Internal Medicine V, Grieskirchen, Austria, ¹²Hospital Hall in Tirol, Department of Internal Medicine, Hall in Tirol, Austria, ¹³Hospital Wiener Neustadt, Department of Internal Medicine I, Wiener Neustadt, Austria, ¹⁴Franziskus Hospital, Department of Internal Medicine, Vienna, Austria, ¹⁵Hanusch Hospital, Department of Internal Medicine, Vienna, Austria, ¹⁶Hospital Elisabethinen Linz, Department of Internal Medicine IV, Linz, Austria, ¹⁷Hospital Feldkirch, Department of Internal Medicine, Feldkirch, Austria, ¹⁸Hospital Brothers of St. John of God Graz, Department of Internal Medicine II, Graz, Austria, ¹⁹Hospital Brothers of St. John of God Salzburg, Department of Internal Medicine, Salzburg, Austria

¹Nancy University Hospital, Department of Hepato-Gastroenterology and Inserm NGERE, Nancy, France, ²Nancy University Hospital, Methodology Data Management and Statistic Unit, MPI Department, Nancy, France, ³University Hospital of Grenoble, Department of Hepato-Gastroenterology, Grenoble, France, ⁴Humanitas University, Department of Biomedical Sciences, Milan, Italy, ⁵Nancy University Hospital, Department of Biochemistry Molecular Biology Nutrition, Nancy, France, ⁶University Hospital of Nancy, Methodology, Data Management and Statistic Unit, MPI Department, Nancy, France

¹Department of Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan, ²Department of Gastroenterology, Asahi University Hospital, Gifu, Japan

¹Division of Gastroenterology and Hepatology, Department of Medicine, University of Michigan, Ann Arbor, USA, ²Michigan Institute Health Policy and Innovation IHPI, University of Michigan, Ann Arbor, USA, ³Michigan Integrated Center for Health Analytics and Medical Prediction MiCHAMP, University of Michigan, Ann Arbor, USA, ⁴Department of Learning Health Sciences, University of Michigan, Ann Arbor, USA

Shaare Zedek Medical Center, Department of Pediatric Gastroenterology, Jerusalem, Israel

¹Department of Gastroenterology and Hepatology, Amsterdam UMC, Location AMC, Amsterdam, The Netherlands, ²Department of Surgery, Amsterdam UMC, Location AMC, Amsterdam, The Netherlands

Inflammatory Bowel Disease Center, University of Chicago Medicine, Chicago, USA

São Paulo State University UNESP, Department of Clinic Medicine, Botucatu, Brazil

Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea Republic of

Fundeni Clinical Institute, Gastroenterology, Bucharest, Romania

¹North-Western State Medical University n.a. I.I.Mechnikov, the Chair of the Propedeutics of Internal Diseases, Gastroenterology and Dietology n.a. S.M. Riss, Saint Petersburg, Russian Federation, ²St. Petersburg State Electrotechnical University ‘LETI’ n.a. V.I. Ulyanov, Department of Biotechnical Systems, Saint Petersburg, Russian Federation

Military Medical Academy, Department of 2 Therapy, St. Petersburg, Russian Federation

¹Department of Gastroenterology, The Alfred Hospital, Melbourne, Australia, ²Department of Epidemiology and Preventative Medicine, Monash University, Melbourne, Australia, ³Department of Gastroenterology, Monash University, Melbourne, Australia

The Catholic University of Korea, Internal Medicine, Seoul, Korea- Republic Of

Hospital Universitario Virgen del Rocío, UGC Digestive Diseases, Seville, Spain