¹University Hospital, Gastroenterology, Santiago de Compostela, Spain, ²Clinic Hospital, Valladolid, Spain, ³University Hospital, Pharmacy, Santiago de Compostela, Spain

¹Habib Thameur Hospital, Gastroenterology, Tunis, Tunisia

¹Clinical Hospital Centre Osijek, Department of Gastroenterology and Hepatology, Osijek, Croatia, ²University J.J. Strossmayer of Osijek, Faculty of Medicine, Osijek, Croatia

¹Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ²Institut d′Investigació en Ciències de la Salut Germans Trias i Pujol, Badalona, Spain, ³Hospital Universitario Ramón y Cajal, Madrid, Spain, ⁴Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain

¹University of Palermo, Gastroenterology Section, DiBiMis, Palermo, Italy, ²Gastroenterology Section, DiBiMis, Palermo, Italy

¹Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, UOC Internal Medicine, Gastroenterology and Hepatology Gastroenterological and Oncological Area, Gastroenterological and Endocrino-Metabolical Sciences Department, Roma, Italy, ³Ospedale Pediatrico Bambino Gesù IRCCS, Unità per lo studio del Microbioma Umano, Roma, Italy, ⁴Case Western Reserve University, Cleveland, USA

¹Shaare Zedek Medical Center, Jerusalem, Israel, ²Dana-Dwek Children's Hospital – Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, ³Schneider Children's Medical Center, Petah Tikva, Israel, ⁴Hadassah Medical Center, Jerusalem, Israel, ⁵Kaplan Medical Center, Rehovot, Israel, ⁶Carmel Medical Center, Haifa, Israel, ⁷Rambam Medical Center, Haifa, Israel, ⁸Meir Medical Center, Kfar Saba, Israel, ⁹Saint Vincent's Catholic Medical Center, Nazareth, Israel, ¹⁰Bnai Zion Medical Center, Haifa, Israel, ¹¹HaEmek Medical Center, Afula, Israel, ¹²Soroka Medical Center, Beer-Sheva, Israel, ¹³Assaf Harofeh Medical Center, Be'er Ya'akov, Israel, ¹⁴Poriya Medical Center, Tiberias, Israel, ¹⁵Galilee Medical Center, Nahariya, Israel, ¹⁶Ziv Medical Center, Tsfat, Israel, ¹⁷Barzilai Medical Center, Ashkelon, Israel, ¹⁸Assuta Ashdod Medical Center, Ashdod, Israel, ¹⁹Sheba Medical Center, Ramat Gan, Israel

¹Mayo Clinic College of Medicine, Rochester, USA, ²University of California San Diego, La Jolla, USA, ³Atlanta Gastroenterology Associates, Atlanta, USA, ⁴Humanitas University, Milan, Italy, ⁵Takeda Development Center Americas Inc., Cambridge, USA, ⁶University Hospitals Leuven, Leuven, Belgium

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