¹University of Chicago Medicine, Department of Medicine, Inflammatory Bowel Disease Center, Chicago, USA, ²Takeda Pharmaceuticals International Co., Cambridge, USA, ³Oxford University Hospitals NHS Foundation Trust, Translational Gastroenterology Unit, Oxford, UK

¹Charité – Universitätsmedizin Berlin, Campus Benjamin Franklin, Department for Medicine (Gastroenterology, Infectious diseases, Rheumatology), Berlin, Germany, ²Berlin Institute of Health, Berlin, Germany

¹Centro Hospitalar São João, Gastrenterology, Porto, Portugal, ²Faculdade de Medicina, Universidade do Porto, Pharmacology, Porto, Portugal, ³Centro Hospitalar Universitário de Coimbra, Gastrenterology, Coimbra, Portugal, ⁴Centro Hospitalar Lisboa Norte, Gastrenterology, Lisboa, Portugal, ⁵Hospital Beatriz Ângelo, Gastrenterology, Loures, Portugal, ⁶Centro Hospitalar Universitário do Algarve, Gastrenterology, Faro, Portugal, ⁷Universidade do Algarve, Faro, Portugal, ⁸Hospital Garcia de Orta, Gastrenterology, Almada, Portugal, ⁹Centro Hospitalar do Porto, Gastrenterology, Porto, Portugal, ¹⁰Centro Hospitalar Lisboa Central, Gastrenterology, Lisboa, Portugal, ¹¹MSD Portugal, Medical Affairs, Paço de Arcos, Portugal, ¹²Merck and Co., Inc., Kenilworth, NJ, USA, ¹³IPATIMUP, i3S‐Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal

¹Radboudumc/MUMC+, Nijmegen, The Netherlands, ²Erasmus MC, Rotterdam, The Netherlands, ³University Medical Centre Groningen, Groningen, The Netherlands, ⁴Leiden University Medical Centre, Leiden, The Netherlands, ⁵University Medical Centre Utrecht, Utrecht, The Netherlands, ⁶Amsterdam University Medical Centre, VU, Amsterdam, The Netherlands, ⁷Amsterdam University Medical Centre, AMC, Amsterdam, The Netherlands, ⁸Haaglanden MC, the Hague, The Netherlands, ⁹Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands, ¹⁰Franciscus Gasthuis and Vlietland, Rotterdam, The Netherlands, ¹¹Maastricht University Medical Centre, Maastricht, The Netherlands, ¹²Radboudumc, Nijmegen, The Netherlands

¹Leeds Teaching Hospitals NHS Trust, Gastroenterology, Leeds, UK

¹Hospital Universitario y Politécnico La Fe, Gastroenterology, Valencia, Spain, ²Hospital Clínic de Barcelona, Barcelona, Spain, ³Hospital General Universitario de Alicante, Alicante, Spain, ⁴Hospital Clínico Universitario de Valladolid, Valladolid, Spain, ⁵Hospital General Universitario de Valencia, Valencia, Spain, ⁶Hospital Universitario Central de Asturias, Oviedo, Spain, ⁷Hospital Universitario Cruces, Barakaldo, Spain, ⁸Complexo Hospitalario Universitario de Pontevedra, Pontevedra, Spain, ⁹Hospital Universitario Miguel Servet, Zaragoza, Spain, ¹⁰Hospital Universitario Ramón y Cajal, Madrid, Spain, ¹¹Hospital Clínico Universitario de Valencia, Valencia, Spain, ¹²Hospital Universitario de Santiago, Santiago de Compostela, Spain, ¹³Hospital Universitario Río Hortega, Valladolid, Spain, ¹⁴Hospital Universitario Marqués de Valdecilla, Santander, Spain, ¹⁵Hospital Universitario La Princesa, Madrid, Spain, ¹⁶Hospital Clínico Universitario de Salamanca, Salamanca, Spain, ¹⁷Consorci Sanitari de Terrassa, Terrassa, Spain, ¹⁸Hospital Universitario Donostia, Donostia-San Sebastián, Spain, ¹⁹Hospital General Universitario de Elche, Elche, Spain, ²⁰Hospital Mutua de Terrassa, Terrassa, Spain, ²¹Hospital Universitario Germans Trias i Pujol, Badalona, Spain, ²²Hospital Universitario Clínico San Carlos, Madrid, Spain, ²³Complejo Asistencial Universitario de León, León, Spain, ²⁴Hospital Universitario Fundación Alcorcón, Alcorcón, Spain, ²⁵Hospital Universitario La Paz, Madrid, Spain, ²⁶Hospital Santa Creu i Sant Pau, Barcelona, Spain, ²⁷Hospital Universitario Infanta Sofía, Madrid, Spain, ²⁸Hospital Universitario de Galdakao, Galdakao, Spain, ²⁹Hospital Universitario Reina Sofía, Córdoba, Spain, ³⁰Hospital General Universitario de Castellón, Castellón, Spain, ³¹Hospital de Sant Joan Despí Moisès Broggi, Barcelona, Spain, ³²Hospital Universitario Son Llàtzer, Palma de Mallorca, Spain, ³³Complejo Hospitalario de Palencia, Palencia, Spain, ³⁴Hospital Universitario de Canarias, Las Palmas, Spain, ³⁵Hospital Central Universitario Lozano Blesa, Zaragoza, Spain, ³⁶Hospital Universitario de Girona Dr J. Trueta, Girona, Spain, ³⁷Hospital General Universitario de Ciudad Real, Ciudad Real, Spain, ³⁸Hospital Universitari Arnau de Vilanova, Lleida, Spain, ³⁹Hospital Universitario Nuestra Sra. de la Candelaria, Tenerife, Spain, ⁴⁰Hospital General de Granollers, Granollers, Spain, ⁴¹Hospital Universitario Doctor Peset, Valencia, Spain, ⁴²Hospital Universitario de Torrejón, Torrejón de Ardoz, Spain, ⁴³Hospital Universitario y Politécnico La Fe, Valencia, Spain

¹Alder Hey Children's Hospital, Liverpool, UK, ²University of Liverpool, School of Medicine, Liverpool, UK, ³Royal Liverpool and Broadgreen University Hospital NHS Trust, Liverpool, UK

¹Evangelismos Hospital, Gastroenterology Department, Athens, Greece, ²2nd Propedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Hippokrateion Hospital, Gastroenterology – Hepatology Department, Thessaloniki, Greece, ³University Hospital of Patras, Gastroenterology Department, Patras, Greece, ⁴Nikaia General Hospital, Gastroenterology Department, Athens, Greece

¹Rambam Health Care Campus, Institute of Gastroenterology, Haifa, Israel, ²The Technion- Israel Institute of Technology, B. Rappaport Faculty of Medicine, Haifa, Israel, ³Rambam Health Care Campus, Department of Internal Medicine H, Haifa, Israel

¹Kitasato University School of Medicine, Gastroenterology, Sagamihara, Japan

¹ErasmusMC-Sophia Children's Hospital, Pediatric Gastroenterology, Rotterdam, The Netherlands, ²Edmonton Pediatric IBD Clinic, Pediatric Gastroenterology and Nutrition, Edmonton, Canada, ³Hopital Necker-enfants-malades, Pediatric Gastroenterology, Paris, France, ⁴Our Lady's Children's Hospital and RSCI, Pediatric Gastroenterology, Dublin, Ireland, ⁵Children's Hospital Helsinki, Pediatric Gastroenterology, Helsinki, Finland, ⁶University Hosptital Motol, Pediatric Gastroenterology, Praque, Czech Republic, ⁷Schneider Chidren's Hospital, Pedriatric Gastroentrolgy, Tel Aviv, Israel, ⁸Dana-Dwek Children's Hospital, Pediatric Gastroenterology, Israel, Israel, ⁹Shaare Zedek Medical Center, Pediatric Gastroenterology, Jerusalem, Israel, ¹⁰Universitair Ziekenhuis Gent, Pediatric Gastroenterology, Gent, Belgium, ¹¹VU Medical Center, Pediatric Gastroenterology, Amsterdam, The Netherlands, ¹²Sheba Medical Center, Pediatric Gastroenterology, Tel Aviv, Israel, ¹³Utrecht Medical Center, Wilhelmina Children's Hospital, Pediatric Gastroenterology, Utrecht, The Netherlands, ¹⁴Universitair Kinderziekenhuis Brussel, Pediatric Gastroenterology, Brussel, Belgium, ¹⁵Hopital Robert Debré, Pediatric Gastroenterology, Paris, France

¹St Vincent's Hospital, Melbourne, Clinical School, Fitzroy, Australia, ²St Vincent's Hospital, Melbourne, Gastroenterology, Fitzroy, Australia, ³St Vincent's Hospital, Melbourne, Radiology, Fitzroy, Australia

¹Fondazione Policlinico Gemelli IRCCS, Gastroenterology, Rome, Italy, ²Mauriziano Hospital, Gastroenterology Unit, Torino, Italy, ³Padua University, Gastroenterology Unit, Padua, Italy, ⁴Città della Scienza e della Salute, Gastroenterology Unit, Torino, Italy, ⁵Bari University, Gastroenterology Unit, Bari, Italy, ⁶Spedali Civili, Internal Medicine, Brescia, Italy, ⁷IRCCS De Bellis, Gastroenterology Unit, Castellana Grotte, Italy, ⁸S. Camillo-Forlanini Hospital, Gastroenterology Unit, Rome, Italy, ⁹Genova University Hospital, Gastroenterology Unit, Genova, Italy, ¹⁰Rho Hospital, Gastroenterology Unit, Rho, Italy, ¹¹Cannizzaro Hospital, Gastroenterology, Catania, Italy, ¹²S. Croce and Carle Hospital, Gastroenterology Unit, Cuneo, Italy

¹R-Biopharm AG, Clinical Diagnostics, Darmstadt, Germany, ²Erasmus MC, Gastroenterology and Hepatology Diagnostic Laboratory, Rotterdam, The Netherlands

¹Erasmus MC-Sophia Children’s Hospital, Paediatric Gastroenterology, Rotterdam, The Netherlands, ²Erasmus MC, Department of Gastroenterology, Rotterdam, The Netherlands

¹Hospital Universitario La Paz, Servicio de Ap. Digestivo, Madrid, Spain

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

¹IRCCS Sacro Cuore Don Calabria, IBD Unit, Negrar, Italy, ²IRCCS Sacro Cuore Don Calabria, Division of Medical Oncology, Negrar, Italy, ³IRCCS Sacro Cuore Don Calabria, Department of Pathology, Negrar, Italy, ⁴Mount Sinai Hospital University of Toronto, Department of Pathology and Laboratory Medicine, Toronto, Canada

¹Rambam Health Care Campus, Department of Gastroenterology, Haifa, Israel, ²Sheba Medical Center, Department of Gastroenterology, Ramat Gan, Israel, ³Tel Aviv University, The Sackler School of Medicine, Tel Aviv, Israel, ⁴IDF Medical Corps, Tel Hashomer, Israel, ⁵Schneider Children's Medical Center, Institute of Gastroenterology, Nutrition and Liver Disease, Petach Tikva, Israel

¹Mauriziano Hospital, Gastroenterology Unit, Torino, Italy, ²Istituto Cinico Locorotondo, Gastroenterology and Endoscopy, Palermo, Italy, ³Mauriziano Hospital, Surgery, Turin, Italy, ⁴ASL CN1 Savigliano Hospital, Surgery, Savigliano, Italy