¹University of Edinburgh, Edinburgh, UK, ²Royal Infirmary of Edinburgh, Edinburgh, UK, ³Westen General Hospital, Edinburgh, UK, ⁴University of Oxford, Oxford, UK, ⁵Western General Hospital, Edinburgh, UK

¹Hospital Santa Maria, CHLN, Gastrenterology, Lisbon, Portugal

¹Centro Hospitalar Vila Nova de Gaia/Espinho, Gastroenterology, Vila Nova de Gaia, Portugal

¹Schlosspark Klinik, University Medicine Berlin, Head of Department of Internal Medicine II, Rheumatology, Clinical Immunology, Osteology Director of Rheumatology Research Center, Berlin, Germany, ²NDA Group, Leatherhead, Surrey, UK, ³Fujifilm Kyowa Kirin Biologics Co., Ltd., Clinical Development Department, Tokyo, Japan, ⁴Hammersmith Medicines Research, London, UK, ⁵Mylan Inc., Global Medical Affairs, Canonsburg, USA, ⁶Stanford University School of Medicine, James W. Raitt Endowed Professor of Medicine Co-Chief Division of Immunology and Rheumatology, Palo Alto, USA

¹Royal Liverpool University Hospital, Liverpool, UK, ²Institute of Translational medicine, Department of Biostatistics, Liverpool, UK

¹Hospital Universitari Germans Trias i Pujol, Gastroenterology Department, Badalona, Spain, ²CIBERehd, Madrid, Spain, ³Hospital Clínic, Barcelona, Spain, ⁴Hospital Reina Sofía, Córdoba, Spain, ⁵Hospital Puerta de Hierro, Majadahonda, Spain, ⁶Hospital de Bellvitge, L'Hospitalet del Llobregat, Spain, ⁷Hospital Clínico San Carlos, Madrid, Spain, ⁸Hospital La Fe de Valencia, Valencia, Spain, ⁹Hospital Ramón y Cajal, Madrid, Spain, ¹⁰Hospital La Paz, Madrid, Spain, ¹¹Hospital Clínico de Valencia, Valencia, Spain, ¹²Hospital Universitario de La Princesa, Madrid, Spain, ¹³H.U. Miguel Servet, Zaragoza, Spain, ¹⁴H.U. Central de Asturias, Oviedo, Spain, ¹⁵H. Clínico Lozano Blesa, Zaragoza, Spain, ¹⁶H. Parc Taulí, Sabadell, Spain, ¹⁷H. Santa Creu i Sant Pau, Barcelona, Spain, ¹⁸H.U. Marqués de Valdecilla, Santander, Spain, ¹⁹Complexo H.U. de Vigo, Vigo, Spain, ²⁰H. Virgen de la Macarena, Sevilla, Spain, ²¹H.U. Burgos, Burgos, Spain, ²²H. Río Hortega, Valladolid, Spain, ²³H. Mútua de Terrassa, Terrassa, Spain

¹Interdisciplinary Crohn Colitis Centre Rhein-Main, Frankfurt/Main, Germany, ²DGD Clinics Sachsenhausen, Frankfurt/Main, Germany, ³Immundiagnostik AG, Bensheim, Germany

¹Theagenion CHT, Gastroenterology Department, Thessaloniki, Greece, ²Theagenion CHT, Dir Haematology Lab, Thessaloniki, Greece

¹PGIMER, Gastroenterology, Chandigarh, India

¹Fukuoka University Chikushi Hospital, IBD Center, Fukuoka, Japan, ²Fukuoka University Chikushi Hospital, Department of Gastroenterology, Fukuoka, Japan, ³Fukuoka University Chikushi Hospital, Department of Endoscopy, Fukuoka, Japan

¹GHI Le Raincy-Montfermeil, Gastroenterology, Montfermeil, France, ²Hopital Cochin, Paris, Gastroenterology, Paris, France, ³Hopital de Dunkerque, Gastroenterology, Dunkerque, France

¹Monash Medical Centre, Gastroenterology, Melbourne, Australia, ²St Vincent's Hospital, Gastroenterology, Melbourne, Australia, ³St Vincent’s Hospital, Gastroenterology, Melbourne, Australia

¹Progenika Biopharma-Grifols, Derio, Spain

¹University of Ulsan College of Medicine, Asan Medical Center, Department of Gastroenterology and Inflammatory Bowel Disease Center, Seoul, South Korea, ²National Institute of Medical Sciences and Nutrition, Department of Gastroenterolgy, Mexico city, Mexico, ³Takeda Pharmaceutical International AG Singapore branch, Singapore, Singapore, ⁴Takeda International - UK Branch, London, UK, ⁵Peking Union Medical College Hospital, Beijing, China, ⁶Federal State Budgetary Institution ‘State Scientific Center of Coloproctology n.a. A.N. Rizhikh’ of the Ministry of Public Health of Russian Federation, Inflammatory and Functional Bowel Diseases Research Unit, Moscow, Russian Federation, ⁷National Taiwan University, Taipei, Taiwan, ⁸Ankara University School of Medicine, Department of Gastroenterology, Ankara, Turkey, ⁹King Khalid University Hospital , King Saud University, Department of Medicine, Riyadh, Saudi Arabia, ¹⁰Singapore General Hospital, Department of Gastroenterology and Hepatology, Singapore, Singapore, ¹¹Fundación CardioInfantil, Instituto de Cardiología, Bogota, Colombia, ¹²IQVIA, Saint Ouen, France, ¹³IQVIA, Makati City, Philippines, ¹⁴PRA Health Sciences, Global Medical Affairs – Research, Europe Development Centre, Takeda International – UK Branch, London, UK, ¹⁵Presidio Columbus Fondazione Policlinico A. Gemelli IRCCS – Università Cattolica del Sacro Cuore, Rome, Italy

¹Interdisciplinary Crohn Colitis Centre Rhein-Main, Frankfurt/Main, Germany, ²Hacettepe University, Ankara, Turkey, ³DGD Clinics Sachsenhausen, Frankfurt/Main, Germany, ⁴Agaplesion Markuskrankenhaus, Frankfurt/Main, Germany

¹Hospital Sant Joan de Déu, Unit for Comprehensive Care of Pediatric Inflammatory Bowel Disease, Pediatric Gasatroneterology, Hepatology and Nutrition Unit, Barcelona, Spain, ²Hospital Sant Joan de Déu, Unit for the Comprehensive Care of Pediatric Inflammatory Bowel Disease, Department of Pediatric Surgery, Barcelona, Spain

¹Amsterdam University Medical Centers, Amsterdam, The Netherlands, ²Mayo Clinic, Rochester, USA, ³University of Michigan, Ann Arbor, USA, ⁴Hospital Clínic Barcelona, IDIBAPS, CIBERehd, Barcelona, Spain, ⁵University of Calgary, Calgary, Canada, ⁶AbbVie Inc., North Chicago, USA, ⁷University Hospital Leuven, Leuven, Belgium

¹Hospital Clínic de Barcelona, Gastroenterology Department, Barcelona, Spain, ²‘Fundación Jiménez Díaz’ University Hospital, Autonomous University of Madrid, Department of Surgery, Madrid, Spain, ³Takeda Pharmaceuticals International AG, Zurich, Switzerland, ⁴Takeda Spain, Madrid, Spain

¹Hospital Universitari Germans Trias i Pujol, Gastroenterology Department, Badalona, Spain, ²CIBERehd, Madrid, Spain, ³Hospital Clínic, Barcelona, Spain, ⁴Hospital La Fe de Valencia, Valencia, Spain, ⁵Hospital Reina Sofía, Córdoba, Spain, ⁶Hospital Puerta de Hierro, Majadahonda, Spain, ⁷Hospital Ramón y Cajal, Madrid, Spain, ⁸Hospital de Bellvitge, L'Hospitalet del Llobregat, Spain, ⁹Hospital Clínico San Carlos, Madrid, Spain, ¹⁰Hospital Clínico de Valencia, Valencia, Spain, ¹¹Hospital La Paz, Madrid, Spain, ¹²Complexo H. Universitario de Vigo, Vigo, Spain, ¹³H.U. Central de Asturias, Oviedo, Spain, ¹⁴H.U. Marqués de Valdecilla, Santander, Spain, ¹⁵H. Santa Creu i Sant Pau, Barcelona, Spain, ¹⁶H. Parc Taulí, Sabadell, Spain, ¹⁷H.U. Miguel Servet, Zaragoza, Spain, ¹⁸Hospital del Mar, Barcelona, Spain, ¹⁹H. Clínico Lozano Blesa, Zaragoza, Spain, ²⁰H. Río Hortega, Valladolid, Spain, ²¹H. Mútua de Terrassa, Terrassa, Spain, ²²H.U. Salamanca, Salamanca, Spain, ²³Hospital Universitario de La Princesa, Madrid, Spain, ²⁴H.G.U. Alicante, Alicante, Spain, ²⁵H. Manises, Manises, Valencia, Spain, ²⁶H. Virgen de la Macarena, Sevilla, Spain, ²⁷H. Dr. Josep Trueta, Girona, Spain, ²⁸H. Donostia, Donostia, Spain, ²⁹H.U. Fundación de Alcorcón, Alcorcón, Spain, ³⁰Complejo Hosp. Burgos, Burgos, Spain, ³¹H. de Cruces, Cruces-Barakaldo, Spain, ³²H. 12 de Octubre, Madrid, Spain, ³³H.U. Fuenlabrada, Fuenlabrada, Spain, ³⁴H. General de Ciudad Real, Ciudad Real, Spain, ³⁵H. Clínico Santiago, Santiago, Spain, ³⁶Complejo Hospitalario de Navarra, Pamplona, Spain, ³⁷H.G.U. Elche, Elche, Spain, ³⁸Consorci Sanitari de Terrassa, Terrassa, Spain, ³⁹H. Santa Lucía Cartagena, Cartagena, Spain, ⁴⁰H. Nuestra Sra. de la Candelaria, Santa Cruz de Tenerife, Spain, ⁴¹H. Mancha Centro, Alcázar de San Juan, Spain, ⁴²H. Sant Joan de Déu – Althaia, Manresa, Spain, ⁴³H. Clínico de Málaga, Virgen de la Victoria, Spain, ⁴⁴Hospital Son Llàtzer, Palma De Mallorca, Spain, ⁴⁵Complejo Hospitalario de León, León, Spain, ⁴⁶H. Clínico Univ. Valladolid, Valladolid, Spain, ⁴⁷H. General de Granollers, Granollers, Spain, ⁴⁸H. Moisès Broggi, St Joan Despí, Spain, ⁴⁹H. San Jorge, Huesca, Spain, H. Basurto, Bilbao, Spain, H. General de Tomelloso, Ciudad Real, Spain, H. Torrejón, Madrid, Spain, H. de Galdakao, Vizcaya, Spain, H.G.U. de Valencia, Valencia, Spain, H.U. Canarias, La Laguna, Spain, H.U. Áraba, Vitoria, Spain, H. General de Castelló, Castelló, Spain, H. Infanta Sofía, San Sebastián de los Reyes, Spain, H. Son Espases, Mallorca, Spain, Complejo Hospitalario de Palencia, Palencia, Spain, H.U. Arnau de Vilanova, LLeida, Spain, Complejo Hospitalario de Jaén, Jaén, Spain, H. General de Segovia, Segovia, Spain, H. Viladecans, Viladecans, Spain

¹IBD Unit, ‘Villa Sofia-Cervello’ Hospital, Palermo, Italy