¹Hopital Henri Mondor, Gastroenterology, Créteil, France, ²Hopital Saint Joseph, Gastroenterology, Paris, France

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

Aristotle University, Hippokration Hospital, Second Propedeutic Department of Internal Medicine, Thessaloniki, Greece

Venizelion General Hospital, Department of Gastroenterology, Heraklion, Greece

University of Szeged, 1st Department of Medicine, Szeged, Hungary

¹University of California San Diego, La Jolla, USA, ²Robarts Clinical Trials, London, Canada, ³Perelman School of Medicine at The University of Pennsylvania, Philadelphia, USA, ⁴Istituto Clinico Humanitas, Milan, Italy, ⁵Medical University of Vienna, Vienna, Austria, ⁶University of Chicago Medicine, Chicago, USA, ⁷AbbVie Inc., North Chicago, USA

¹Rabta Hospital, Gastroenterology “A”, Tunis, Tunisia, ²Rabta Hospital, Surgery “A”, Tunis, Tunisia

Guy's and St Thomas' Hospital, Gastroenterology, London, UK

¹Tor Vergata University, Department of Surgery, Rome, Italy, ²Tor Vergata University, Surgery, Rome, Italy

Coimbra Hospital and University Center, Gastroenterology, Coimbra, Portugal

The Second Affiliated Hospital of Soochow University, Gastroenterology, Suzhou, China

¹Scripps Clinic, Division of Gastroenterology, La Jolla, USA, ²The Scripps Research Institute, Scripps Translational Science Institute, La Jolla, USA, ³The Scripps Research Institute, Department of Integrative Structural and Computational Biology, La Jolla, USA, ⁴University of California, San Diego, Division of Gastroenterology, La Jolla, USA, ⁵University of Pennsylvania, Center for Clinical Epidemiology and Biostatistics, Philadelphia, USA, ⁶Scripps Clinic, Department of Internal Medicine, La Jolla, USA, ⁷San Diego State University, School of Exercise and Nutritional Sciences, San Diego, USA

¹ASST Fatebenefratelli Sacco, DIBIC “L. Sacco” University of Milan, Gastrointestinal Unit, Milan, Italy, ²University Hospital of Parma, Department of Gastroenterology and Digestive Endoscopy, Parma, Italy

¹Kyorin University School of Medicine, Third Department of Internal Medicine, Tokyo, Japan, ²Iwate Medical University School of Medicine, Division of Gastroenterology, Department of Medicine, Morioka, Japan, ³Hyogo College of Medicine, Department of Intestinal Inflammation Research, Nishinomiya, Japan, ⁴Sapporo Medical University School of Medicine, Department of Gastroenterology and Hepatology, Sapporo, Japan, ⁵Sapporo Kosei General Hospital, Inflammatory Bowel Disease Center, Sapporo, Japan, ⁶Tokyo Yamate Medical Center, Department of Medicine, Division of Gastroenterology, Tokyo, Japan, ⁷Ishida Clinic of IBD and Gastroenterology, Oita, Japan, ⁸Saitama Medical Center, Saitama Medical University, Department of Gastroenterology and Hepatology, Saitama, Japan, ⁹Graduate School of Medicine, Chiba University, Department of Gastroenterology and Nephrology, Chiba, Japan, ¹⁰Graduate School of Medical Sciences, Kyushu University, Department of Medicine and Clinical Science, Fukuoka, Japan, ¹¹Tokyo Medical and Dental University, Department of Gastroenterology and Hepatology, Tokyo, Japan, ¹²Fukuoka University Chikushi Hospital, Department of Gastroenterology, Chikushino, Japan, ¹³Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Department of Molecular Gastroenterology and Hepatology, Kyoto, Japan, ¹⁴Keio University School of Medicine, Department of Internal Medicine, Tokyo, Japan, ¹⁵Toho University Sakura Medical Center, Department of Internal Medicine, Sakura, Japan, ¹⁶The Institute of Medical Science Hospital, The University of Tokyo, Center for Translational Research, Tokyo, Japan, ¹⁷Tokyo Medical and Dental University, Department of Gastroenterology and Hepatology, Tokyo, Japan, ¹⁸Kitasato University Kitasato Institute Hospital, Center for Advanced IBD Research and Treatment, Tokyo, Japan

¹Austin Health, Department of Gastroenterology, Melbourne, Australia, ²University of Melbourne, Austin Academic Centre, Melbourne, Australia, ³St Vincent's Hospital, Department of Gastroenterology, Melbourne, Australia, ⁴Mount Sinai, Icahn School of Medicine, New York, USA, ⁵McGill University Health Centre, Division of Gastroenterology, Montreal, Canada, ⁶Royal Brisbane and Women's Hospital, Department of Gastroenterology and Hepatology, Brisbane, Australia, ⁷Leeds Teaching Hospitals NHS Trust, Gastroenterology Institute, Leeds, UK, ⁸University of Leeds, Leeds Institute of Biomedical and Clinical Sciences, Leeds, UK

¹University of Manitoba, Pediatrics, Winnipeg, Canada, ²Hospital for Sick Children, University of Toronto, Department of Paediatrics; Department of Gastroenterology, Hepatology and Nutrition, Toronto, Canada, ³University of Alberta, Department of Pediatrics, Edmonton, Canada, ⁴Pediatrics, University of Calgary, Calgary, Canada, ⁵University of Ottawa, Department of Pediatrics, Ottawa, Canada, ⁶BC Children's Hospital, Vancouver, Canada, ⁷McMaster University, Department of Pediatrics, Hamilton, Canada

¹Robarts Clinical Trials, Western University, Ontario, Canada, ²University of California - San Diego, San Diego, USA, ³Academic Medical Center, Amsterdam, The Netherlands, ⁴Mayo Clinic, Department of Laboratory Medicine and Pathology, Scottsdale, USA, ⁵Northwestern University Feinberg School of Medicine, Chicago, USA, ⁶Atlanta Gastroenterology Associates, Atlanta, USA, ⁷University of Leuven, Leuven, Belgium, ⁸University of Calgary, Calgary, Canada, ⁹Receptos, a Wholly Owned Subsidiary of Celgene, San Diego, USA

¹Faculdade Farmacia Universidade Lisboa, iMed - Research Institute for Medicines, Lisboa, Portugal, ²iBET, Instituto de Biologia Experimental e Tecnológica, Oeiras, Portugal, ³Bayer Portugal, Carnaxide, Portugal, ⁴Centro Interdisciplinar de Investigação em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon, Lisboa, Portugal, ⁵Hospital Garcia de Orta (HGO), Almada, Portugal, ⁶Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal, ⁷CEDOC/NOVA Medical School, Lisbon, Portugal, ⁸Immunomediated Systemic Diseases Unit (UDIMS), Fernando Fonseca Hospital, Amadora, Portugal, ⁹Galway University Hospitals, Department of Rheumatology, Galway, Ireland, ¹⁰Charite Universitaetsmedizin Berlin, Department Medicine Rheumatology and Clinical Immunology, Berlin, Germany, ¹¹Centro Hospitalar de Lisboa Norte, EPE, Hospital de Santa Maria, Rheumatology Department, Lisboa, Portugal, ¹²Hospital Beatriz Ângelo, Division of Gastroenterology, Loures, Portugal, ¹³Unidade de Gastroenterologia of CHBM, Barreiro, Portugal, ¹⁴Humanitas University; Humanitas Clinical and Research Centre, Department of Biomedical Sciences, Milan, Italy, ¹⁵Academic Medical Center, Amsterdam, The Netherlands, ¹⁶Sheba Medical Center and Sackler School of Medicine, Tel-Aviv University, Department of Gastroenterology, Tel-Aviv, Israel, ¹⁷Portuguese Institute of Oncology of Lisbon Francisco Gentil, EPE, Lisboa, Portugal, ¹⁸Hospital de Santa Maria, Department of Gastroenterology and Hepatology, Lisboa, Portugal, ¹⁹Faculty of Medicine, University of Porto, Centro Hospitalar São João, Gastroenterology Department, Porto, Portugal, ²⁰Semmelweis University, First Department of Medicine, Budapest, Hungary, ²¹McGill University, MUHC, Montreal General Hospital, Division of Gastroenterology, Montreal, Canada

¹St. Paul's Hospital, Vancouver, Canada, ²Evidera, St-Laurent, Canada, ³Evidera, London, UK, ⁴Takeda, Oakville, Canada, ⁵Takeda Development Centre Europe Ltd., London, UK

¹Faculty of Medicine and Health, Örebro University, Department of Gastroenterology, Örebro, Sweden, ²Linköping University, Department of Gastroenterology, Linköping, Sweden, ³Danderyd Hospital, Department of Internal Medicine, Stockholm, Sweden, ⁴Skåne University Hospital, Department of Gastroenterology, Malmö, Sweden, ⁵St Göran Hospital, Department of Internal Medicine, Stockholm, Sweden, ⁶Karolinska Institute, Department of Medicine, Stockholm, Sweden, ⁷Skåne University Hospital, Department of Gastroenterology, Lund, Sweden, ⁸Kungsbacka Hospital, Department of Internal Medicine, Kungsbacka, Sweden, ⁹Takeda Pharma AB, Solna, Sweden, ¹⁰Ersta Hospital, Department of Gastroenterology, Stockholm, Sweden, ¹¹Södra Älvsborgs Hospital, Department of Internal Medicine, Borås, Sweden, ¹²Skaraborgs Hospital, Department of Internal Medicine, Lidköping, Sweden, ¹³Sunderby Hospital, Department of Internal Medicine, Sunderbyn, Sweden, ¹⁴Örebro University, Clinical Epidemiology and Biostatistics, Örebro, Sweden