¹ASST Papa Giovanni XXIII, Pediatric Hepatology- Gastroenterology and Transplantation, Bergamo, Italy, ²University ‘Federico II’, Translational Medical Science–Pediatric Section, Napoli, Italy, ³Hospices Civils de Lyon- Hôpital Femme Mère Enfant, Paediatric Gastroenterology Hepatology and Nutrition, Bron, France, ⁴University Hospital Liège, Division of Gastroenterology- Hepatology and Nutrition- Department of Pediatrics, Liège, Belgium, ⁵Great Ormond Street Hospital for sick children, Pediatric Gastroenterology Hepatology and Nutrition, London, UK, ⁶Royal Hospital for Children, Pediatric Gastroenterology Hepatology and Nutrition, Glasgow, UK, ⁷University of Oxford, Translational Gastroenterology Unit and Department of Paediatrics, Oxford, UK, ⁸Dr. von Hauner Children’s Hospital- LMU Munich Medical Center, Division of Gastroenterology and Hepatology, Munich, Germany, ⁹CHR Citadelle, Department of Gastroenterology, Liege, Belgium, ¹⁰Medical University of Warsaw, Department of Paediatrics- Gastroenterology and Nutrition, Warsaw, Poland, ¹¹Medical University of Innsbruck, Pediatric I, Innsbruck, Austria, ¹²Children’s Hospital- University of Helsinki, Department of Paediatric Gastroenterology, Helsinki, Finland, ¹³Necker Children Hospital, Pediatric Gastroenterology Hepatology and Nutrition, Paris, France

Midlands Regional Hospital Tullamore, Department of Gastroenterology, Tullamore, Ireland

¹QEII Health Sciences Centre, Digestive Care & Endoscopy, Halifax, Canada, ²University of Toronto, Factor-Inwentash Faculty of Social Work, Toronto, Canada, ³Dalhousie University, Research Methods Unit, Halifax, Canada, ⁴Patient-Research Partner, Patient-Research Partner, 100 Mile House, Canada, ⁵University of Alberta, Medicine, Edmonton, Canada, ⁶University of Toronto, Medicine, Toronto, Canada, ⁷University of Ottawa, Medicine, Ottawa, Canada, ⁸Dalhousie University, Medicine, Fredericton, Canada, ⁹McGill University, Medicine, Montreal, Canada, ¹⁰University of Saskatchewan, Medicine, Saskatoon, Canada, ¹¹University of Victoria, Medicine, Victoria, Canada, ¹²Dalhousie University, Medicine, Halifax, Canada

¹Mount Sinai Hospital, Department of Surgery, Toronto, Canada, ²Zane Cohen Centre for Digestive Diseases, Inflammatory Bowel Diseases, Toronto, Canada, ³University of Toronto, Department of Surgery, Toronto, Canada, ⁴Linkoping University Hospital, Department of Surgery, Linkoping, Sweden, ⁵Linkoping University, Department of Experimental Medicine, Linkoping, Sweden

¹Department of Gastroenterology and Hepatology, Clinical Hospital Centre Zagreb, Zagreb, Croatia, ²Zagreb School of Medicine, University of Zagreb, Zagreb, Croatia

¹St. Olavs. Hospital, Department of Gastroenterology and Hepatalogy, Trondheim, Norway, ²Norwegian University of Science and Technology, Department of Clinical and Molecular Medicine, Trondheim, Norway, ³University of Oslo, Department of Health Management and Health Economics, Oslo, Norway

Department of Medicine- King Abdulaziz University- Jeddah- Saudi Arabia, Department of Medicine-, Jeddah, Saudi Arabia

¹Hospital das Clinicas da Faculdade de Medicina da USP, Inflammatory Bowel Disease Department, São Paulo, Brazil, ²Hospital das Clinicas da Faculdade de Medicina da USP, HPV Institute, São Paulo, Brazil, ³Instituto de Infectologia Emilio Ribas, Coloproctology department, São Paulo, Brazil, ⁴Hospital das Clinicas da Faculdade de Medicina da USP, Pathology department, São Paulo, Brazil

Hospital Sant Joan de Déu, Unit for the Comprehensive Care of Pediatric Inflammatory Bowel Disease. Department of Pediatric Gastroenterology- Hepatology and Nutrition, Esplugues de Llobregat, Spain

¹Universitary Hospital Fundación Santa Fe de Bogotá, Internal Medicine, Bogotá, Colombia, ²Universitary Hospital Fundación Santa Fe de Bogotá, Colon and Rectal Surgery, Bogotá, Colombia, ³Universidad de los Andes, Medicine, Bogotá, Colombia, ⁴Universitary Hospital Fundación Santa Fe de Bogotá, Patology, Bogotá, Colombia, ⁵Gastroenterology Department of Universitary Hospital Fundación Santa Fe de Bogotá, Bogotá, Colombia, ⁶Universitary Hospital Fundación Santa Fe de Bogotá, Gastroenteroly, Bogotá, Colombia

University Hospital Centre Sestre milosrdnice, Department of Gastroenterology and Hepatology, Zagreb, Croatia

¹North District- Taichung City- Taiwan, Department of Chinese Medicine, Taichung, Taiwan- Province Of China, ²North District- Taichung City- Taiwan, Center for Digestive Disease, Taichung, Taiwan- Province Of China, ³North District- Taichung City- Taiwan, Division of Colorectal Surgery, Taichung, Taiwan- Province Of China, ⁴North District- Taichung City- Taiwan, Department of Pathology, Taichung, Taiwan- Province Of China

¹University of Saskatchewan, Department of Community Health & Epidemiology- College of Medicine, Saskatoon, Canada, ²University of Saskatchewan, School of Public Health, Saskatoon, Canada, ³Muskoday First Nation, Muskoday, Saskatchewan, Canada, ⁴Department of Indigenous Services Canada, Health Surveillance and Assessment Unit Service, Regina, Canada, ⁵University of Saskatchewan, Department of Medicine- College of Medicine, Saskatoon, Canada, ⁶University of Saskatchewan, Department of Indigenous Studies- College of Arts & Science, Saskatoon, Canada, ⁷Health Quality Council, Saskatchewan, Saskatoon, Canada, ⁸One Arrow First Nation, Saskatchewan, North Battleford, Canada, ⁹York Factory First Nation, Manitoba, North Battleford, Canada, ¹⁰Crohn’s Colitis Canada, Saskatchewan Chapter, Saskatoon, Canada, ¹¹James Smith Cree Nation, Kinistino, Saskatchewan, Canada, ¹²University of Saskatchewan, Department of Psychology- College of Arts & Science, Saskatoon, Canada

¹University of Ulsan College of Medicine- Asan Medical Center, Department of Gastroenterology and Inflammatory Bowel Disease Center, Seoul, Republic of Korea, ²Daehang Hospital, Department of Gastroenterology, Seoul, Republic of Korea, ³VHS Medical Center, Department of Internal Medicine, Seoul, Republic of Korea, ⁴Samsung Medical Center- Sungkyunkwan University School of Medicine, Department of Medicine, Seoul, Republic of Korea, ⁵Seoul National University Bundang Hospital, Department of Internal Medicine, Seongnam, Republic of Korea, ⁶Asan Medical Center- University of Ulsan College of Medicine, Department of Clinical Epidemiology and Biostatistics, Seoul, Republic of Korea, ⁷Kangdong Sacred Heart Hospital- Hallym University College of Medicine, Department of Internal Medicine, Seoul, Republic of Korea, ⁸Hansol Hospital, Department of Internal Medicine, Seoul, Republic of Korea, ⁹Kyung Hee University Hospital at Gang Dong- Kyung Hee University College of Medicine, Department of Internal Medicine, Seoul, Republic of Korea, ¹⁰Kangdong Seoul Colon and Rectal Surgery, Department of Surgery, Seoul, Republic of Korea, ¹¹Yang Hospital, Department of Surgery, Seoul, Republic of Korea, ¹²Seoul National University College of Medicine, Department of Internal Medicine and Liver Research Institute, Seoul, Republic of Korea, ¹³Konkuk University Medical Center, Department of Internal Medicine, Seoul, Republic of Korea, ¹⁴National Police Hospital, Department of Internal Medicine, Seoul, Republic of Korea, ¹⁵Jamsil Seoul Surgical Clinic, Department of Surgery, Seoul, Republic of Korea

¹St George’s- University of London, Gastroenterology, London, UK, ²Imperial College- London, Department of Primary Care and Public Health, London, UK, ³University College London, Institute of Epidemiology & Health, London, UK, ⁴Institute of Psychiatry Psychology and Neuroscience, Psychological Medicine, London, UK

¹Sainte-Justine University Hospital Centre, Department of Pediatric Gastroenterology, Montréal, Canada, ²INRS-Institut Armand-Frappier- Institut national de la recherche scientifique-, Epidemiology, Laval, Canada

¹University of Saskatchewan, Department of Community Health & Epidemiology- College of Medicine, Saskatoon- SK, Canada, ²University of Saskatchewan, Division of Gastroenterology- College of Medicine, Saskatoon- SK, Canada, ³University of Calgary, Department of Medicine, Calgary, Canada, ⁴University of Manitoba, Department of Community Health Sciences, Winnipeg, Canada

¹Seoul National University College of Medicine, Department of Internal Medicine- Liver Research Institute, Seoul, Republic of Korea, ²The Catholic University of Korea, Department of Biostatistics- College of Medicine, Seoul, Republic of Korea

¹Medical Centre- Hungarian Defence Forces, Division of Gastroenterology, Budapest, Hungary, ²Semmelweis University, 1st Department of Medicine, Budapest, Hungary, ³McGill University, Division of Gastroenterology, Montreal, Canada

¹Hospital Universitari Mutua De Terrassa, Gastroenterology Department, Terrassa, Spain, ²Instituto Carlos III-CIBEREHD, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas CIBEREHD, Madrid, Spain, ³Hospital Central de Asturias, Gastroenterology Department, Oviedo, Spain, ⁴Hospital de Galdakao, Gastroenterology Department, Bilbao, Spain, ⁵Hospital Universitario de La Princesa, Gastroenterology, Madrid, Spain, ⁶Instituto de Investigación Sanitaria Princesa IIS-IP, Instituto de Investigación Sanitaria Princesa IIS-IP, Madrid, Spain, ⁷Hospital Clínico Lozano Blesa, Gastroenterology Department, Zaragoza, Spain, ⁸Instituto de Investigación Sanitaria de Aragón IIS, Instituto de Investigación Sanitaria de Aragón IIS, Zaragoza, Spain, ⁹Consorci Sanitari de Terrassa, Gastroenterology Department, Terrassa, Spain, ¹⁰Hospital Sant Joan de Déu Althaia, Gastroenterology Department, Manresa, Spain, ¹¹Hospital Universitario de Burgos, Gastroenterology Department, Burgos, Spain, ¹²Hospital Universitari Germans Trias i Pujol, Gastroenterology Department, Badalona, Spain, ¹³Hospital Moisés Broggi, Gastroenterology Department, Sant Joan Despí, Spain, ¹⁴Hospital Álvaro Cunqueiro-Complejo Hospitalario Universitario de Vigo, Gastroenterology Department, Vigo, Spain, ¹⁵Hospital Universitari Parc Taulí Sabadell, Gastroenterology Department, Sabadell, Spain, ¹⁶Facultat de Medicina- Universitat Autònoma de Barcelona, Medicine Department, Barcelona, Spain, ¹⁷Hospital General de Granollers, Gastroenterology Department, Granollers, Spain, ¹⁸Hospital Marqués de Valdecilla- IDIVAL, Gastroenterology Department, Santander, Spain, ¹⁹Hospital General de Tomelloso, Gastroenterology Department, Tomelloso, Spain, ²⁰Hospital Clínico de Valencia, Gastroenterology Department, Valencia, Spain, ²¹Hospital del Mar, Servei de Digestiu, Barcelona, Spain, ²²Hospital del Mar Research Institute IMIM, Hospital del Mar Research Institute IMIM, Barcelona, Spain, ²³Hospital Universitari Dr. Josep Trueta, Gastroenterology Department, Girona, Spain, ²⁴Hospital Universitari Bellvitge- IDIBELL, Gastroenterology Department, L’Hospitalet de Llobregat, Spain, ²⁵Universitat de Barcelona, Medicine Department, Barcelona, Spain, ²⁶Hospital Santa Creu i Sant Pau, Gastroenterology Department, Barcelona, Spain, ²⁷Hospital Reina Sofía, Gastroenterology Department, Córdova, Spain, ²⁸Hospital Universitario La Fe, Gastroenterology Department, Valencia, Spain, ²⁹Hospital Arnau de Vilanova, Gastroenterology Deparment, Lleida, Spain, ³⁰Hospital Universitario Santiago, Gastroenterology Department, Santiago de Compostela, Spain, ³¹Hospital Universitario Ramón y Cajal, Gastroenterology Department, Madrid, Spain, ³²Hospital Infanta Sofía, Gastroenterology Department, San Sebastián de los Reyes, Spain, ³³Hospital Universitario de Fuenlabrada, Gastroenterology Department, Fuenlabrada, Spain, ³⁴Instituto de Investigación de La Paz IdiPAZ, Instituto de Investigación de La Paz IdiPAZ, Madrid, Spain, ³⁵Hospital Universitario Miguel Servet, Gastroenterology Department, Zaragoza, Spain