The Jikei University School of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokyo, Japan

Med Taher Maamouri Hospital, GastroEnterology Department, Nabeul, Tunisia

¹Hospital Universitario de La Princesa, Gastroenterology Unit, Madrid, Spain, ²Instituto de Investigación Sanitaria Princesa (IIS-IP), Madrid, Spain, ³Universidad Autónoma de Madrid, Madrid, Spain, ⁴Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain, ⁵Hospital Clinic Barcelona, Gastroenterology Unit, Barcelona, Spain, ⁶Hospital Universitario Reina Sofía, Gastroenterology Unit, Córdoba, Spain, ⁷IMIBIC, Córdoba, Spain, ⁸Hospital Clínico San Carlos, Gastroenterology Unit, Madrid, Spain, ⁹Hospital Universitario Germans Trias i Pujol, Gastroenterology Unit, Badalona, Spain, ¹⁰Hospital Universitario Puerta de Hierro, Gastroenterology Unit, Madrid, Spain, ¹¹Hospital Clínico Universitario de Valencia, Gastroenterology Unit, Valencia, Spain, ¹²Hospital Universitario Virgen Macarena, Gastroenterology Unit, Sevilla, Spain, ¹³Complejo Hospitalario Universitario de Vigo, Gastroenterology Unit, Vigo, Spain, ¹⁴Hospital Clínico Universitario Lozano Blesa, Gastroenterology Unit, Zaragoza, Spain, ¹⁵Hospital Universitario Ramón y Cajal, Gastroenterology Unit, Madrid, Spain, ¹⁶Hospital Universitario de Marqués de Valdecilla, Gastroenterology Unit, Santander, Spain, ¹⁷Hospital Universitario de Bellvitge, Gastroenterology Unit, Hospitalet de Llobregat, Spain, ¹⁸Hospital Universitario La Paz, Gastroenterology Unit, Madrid, Spain, ¹⁹Hospital Universitario y Politécnico de La Fe, Gastroenterology Unit, Valencia, Spain, ²⁰Hospital Universitario Rio Hortega, Gastroenterology Unit, Valladolid, Spain, ²¹Hospital Universitario Central de Asturias, Gastroenterology Unit, Oviedo, Spain, ²²Hospital de La Santa Creu i Sant Pau, Gastroenterology Unit, Barcelona, Spain, ²³Consorcio Corporación Sanitaria Parc Taulí, Gastroenterology Unit, Sabadell, Spain, ²⁴Hospital Virgen de La Victoria, Gastroenterology Unit, Málaga, Spain, ²⁵Hospital Universitario de Burgos, Gastroenterology Unit, Burgos, Spain, ²⁶Hospital Universitario Miguel Servet, Gastroenterology Unit, Zaragoza, Spain, ²⁷Consorci Sanitari Terrassa, Gastroenterology Unit, Tarrasa, Spain, ²⁸Hospital del Mar, Gastroenterology Unit, Barcelona, Spain, ²⁹Hospital Clínico Universitario de Valladolid, Gastroenterology Unit, Valladolid, Spain, ³⁰Hospital General Universitario de Alicante, Gastroenterology Unit, Alicante, Spain, ³¹Hospital Universitario de Fuenlabrada, Gastroenterology Unit, Fuenlabrada, Spain, ³²Hospital Universitario Fundación Alcorcón, Gastroenterology Unit, Alcorcón, Spain, ³³Hospital de Manises, Gastroenterology Unit, Manises, Spain, ³⁴Hospital Universitario De Salamanca, Gastroenterology Unit, Salamanca, Spain, ³⁵Hospital Universitario de Gerona Dr Josep Trueta, Gastroenterology Unit, Gerona, Spain, ³⁶Hospital General Universitario de Elche, Gastroenterology Unit, Elche, Spain, ³⁷Hospital Universitario Donostia, Gastroenterology Unit, San Sebastián, Spain, ³⁸Hospital Universitario 12 de Octubre, Gastroenterology Unit, Madrid, Spain, ³⁹Hospital General Universitario de Ciudad Real, Gastroenterology Unit, Ciudad Real, Spain, ⁴⁰Complejo Hospitalario de Navarra, Gastroenterology Unit, Pamplona, Spain, ⁴¹Hospital Universitario Cruces, Gastroenterology Unit, Baracaldo, Spain, ⁴²Hospital de Galdakao-Usansolo, Gastroenterology Unit, Vizcaya, Spain, ⁴³Complejo Hospitalario la Mancha Centro, Gastroenterology Unit, Alcázar de San Juan, Spain, ⁴⁴Hospital General Universitario Santa Lucía, Gastroenterology Unit, Cartagena, Spain, ⁴⁵Hospital de Sant Joan Despí Moisès Broggi, Gastroenterology Unit, Sant Joan Despí, Spain, ⁴⁶Hospital General San Jorge, Gastroenterology Unit, Huesca, Spain, ⁴⁷Complejo Hospitalario de Palencia, Gastroenterology Unit, Palencia, Spain, ⁴⁸Hospital Universitario de Torrejón, Gastroenterology Unit, Torrejón de Ardoz, Spain, ⁴⁹Hospital Clínico Universitario de Santiago, Gastroenterology Unit, Santiago de Compostela, Spain, ⁵⁰Hospital Sant Joan de Deu - Althaia, Gastroenterology Unit, Manresa, Spain, ⁵¹Hospital Universitario de Canarias, Gastroenterology Unit, La Laguna, Spain, ⁵²Hospital Son Llàtzer, Gastroenterology Unit, Palma de Mallorca, Spain, ⁵³Hospital Público General de Tomelloso, Gastroenterology Unit, Tomelloso, Spain, ⁵⁴Hospital Universitario Nuestra Señora de Candelaria, Gastroenterology Unit, Santa Cruz de Tenerife, Spain, ⁵⁵Hospital General Universitario de Valencia, Gastroenterology Unit, Valencia, Spain, ⁵⁶Hospital Universitario Basurto, Gastroenterology Unit, Bilbao, Spain, ⁵⁷Hospital General Universitario de Castellón, Gastroenterology Unit, Castellón, Spain, ⁵⁸Hospital Royo Villanova, Gastroenterology Unit, Zaragoza, Spain, ⁵⁹Hospital Universitario Araba, Gastroenterology Unit, Vitoria, Spain, ⁶⁰Hospital Universitario Arnau de Vilanova, Gastroenterology Unit, Lérida, Spain, ⁶¹Hospital de Viladecans, Gastroenterology Unit, Viladecans, Spain, ⁶²Hospital Universitario Son Dureta, Gastroenterology Unit, Palma de Mallorca, Spain, ⁶³Hospital General de Granollers, Gastroenterology Unit, Granollers, Spain, ⁶⁴Hospital General de Segovia, Gastroenterology Unit, Segovia, Spain, ⁶⁵Complejo Hospitalario de Jaén, Gastroenterology Unit, Jaén, Spain, ⁶⁶Hospital Universitario Infanta Sofía, Gastroenterology Unit, San Sebastián de los Reyes, Spain, ⁶⁷Hospital Comarcal Sant Jaume de Calella, Gastroenterology Unit, Calella, Spain, ⁶⁸Hospital Marina Baixa, Gastroenterology Unit, Villajoyosa, Spain, ⁶⁹Hospital Santos Reyes, Gastroenterology Unit, Aranda de Duero, Spain, ⁷⁰Hospital Vega Baja, Gastroenterology Unit, San Bartolomé, Spain, ⁷¹Hospital Can Misses, Gastroenterology Unit, Ibiza, Spain, ⁷²Hospital Universitario Joan XXIII, Gastroenterology Unit, Tarragona, Spain, ⁷³Hospital Materno Infantil, Pediatric Gastroenterology and Nutrition Unit, Málaga, Spain, ⁷⁴Hospital Comarcal de la Axarquía, Vélez-Málaga, Spain

¹Mayo Clinic, Colon and Rectal Surgery, Rochester, USA, ²Mayo Clinic, Surgery, Rochester, USA, ³St. Mark's Hospital and Academic Institute, London, UK, ⁴Humanitas Research Institute, Milan, Italy

¹St Vincent's Hospital Melbourne, Department of Gastroenterology, Melbourne, Australia, ²The University of Melbourne, Melbourne, Australia, ³St Vincent's Hospital Melbourne, Department of Medical Imaging, Melbourne, Australia

"Dana-Dwek" Children's Hospital, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, The Pediatric Gastroenterology unit, Tel Aviv, Israel

¹Icahn School of Medicine at Mount Sinai, Department of Genetics and Genomic Sciences, New York, USA, ²Icahn School of Medicine at Mount Sinai, Department of Obstetrics, Gynecology and Reproductive Sciences, New York, USA, ³Icahn School of Medicine at Mount Sinai, Division of Pediatric Gastroenterology and Hepatology, New York, USA, ⁴TechLab, Blacksburg, USA, ⁵Calpro AS, Lysaker, Norway, ⁶Icahn School of Medicine at Mount Sinai, Division of Gastroenterology, Department of Medicine, New York, USA, ⁷Hospital Beatriz Ângelo, Gastroenterology Division, Loures, USA

¹CHU Nantes, Gastroenterology - IMAD, Nantes, France, ²Polytech Nantes Engineering School, Nantes 44000, France, ³CHU Nantes IMAD, Gastroenterology, Nantes 44000, France

Peking University Third Hospital, Department of Gastroenterology, Beijing, China

¹University Hospital Estaing, Gastroenterology Department, Clermont-Ferrand, France, ²UMR 1071 Inserm/Université d'Auvergne; USC-INRA 2018, Microbes, Intestine, Inflammation and Susceptibility of the Host, Clermont-Ferrand, France, ³Queen Elizabeth Hospital, Department of Medicine, Hong Kong, Hong Kong, ⁴Inflammatory Bowel Disease Center University of Chicago Medicine, Chicago, USA, ⁵University Hospital, Biostatistics Unit, DRCI, Clermont-Ferrand, France, ⁶University of Chicago Medicine, Department of Pathology, Chicago, USA

Centro Hospitalar Tondela - Viseu, Gastroenterology, Viseu, Portugal

¹University Hospitals Leuven, Department of Paediatric Gastroenterology, Leuven, Belgium, ²KU Leuven, Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, Leuven, Belgium, ³University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium

¹Örebro University, Department of Gastroenterology, Faculty of Medicine and Health, Örebro, Sweden, ²Örebro University, Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro, Sweden, ³Uppsala University, Department of Medical Sciences, Uppsala, Sweden

¹University of Ulsan College of Medicine, Asan Medical Center, Gastroenterology, Seoul, South Korea, ²University of Ulsan College of Medicine, Asan Medical Center, Inflammatory Bowel Disease Center, Seoul, South Korea

Hospital Santa Maria, Gastrenterology, Lisbon, Portugal

¹University Hospitals Leuven, Department of Paediatric gastroenterology, Leuven, Belgium, ²KU Leuven, Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, Leuven, Belgium, ³University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium

Hannover Medical School, Department of Gastroenterology, Hepatology and Endocrinology, Hannover, Germany

¹Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands, ²CHU Bordeaux, Bordeaux, France, ³University of California at San Diego, San Diego, USA, ⁴Prometheus Laboratories Inc., San Diego, USA, ⁵University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium

¹University of Chicago Medicine, Inflammatory Bowel Disease Center, Chicago, USA, ²The Alfred Hospital, Melbourne, Australia, ³The Royal Melbourne Hospital, Gastroenterology Department, Melbourne, Australia

¹Algarve University Hospital Centre, Gastroenterology, Algarve, Portugal, ²Algarve Hospital Centre, Gastroenterology, Algarve, Portugal, ³Universidade do Algarve, Biomedical Science Department, Algarve, Portugal, ⁴Algarve University Hospital Center, Pathology, Algarve, Portugal, ⁵Health Community Centres Organization, Algarve, Portugal, ⁶Algarve University Hospital Center, Gastroenterology, Algarve, Portugal