¹Pusan National University School of Medicine & Pusan National University Hospital, Internal Medicine, Busan, Republic of Korea, ²Inje University Busan Paik Hospital, Internal Medicine, Busan, Republic of Korea, ³Pusan National University Yangsan Hospital, Internal Medicine, Yangsan, Republic of Korea, ⁴Ewha Womans University College of Medicine, Internal Medicine, Seoul, Republic of Korea, ⁵Yeungnam University College of Medicine, Internal Medicine, Daegu, Republic of Korea, ⁶Healthcare System Gangnam Center, Seoul National University Hospital, Internal Medicine, Seoul, Republic of Korea, ⁷Soonchunhyang University Bucheon Hospital, Gastroenterology and Hepatology, Bucheon, Republic of Korea, ⁸Hallym University Sacred Heart Hospital, Internal Medicine-, Anyang, Republic of Korea, ⁹The Catholic University of Korea, Internal Medicine, Seoul, Republic of Korea, ¹⁰Inje university Haeundae Paik Hospital, Internal Medicine, Busan, Republic of Korea

¹University of Szeged, First Department of Medicine, Szeged, Hungary, ²University of Semmelweis, First Department of Surgery, Budapest, Hungary, ³University of Pécs, First Department of Medicine, Pécs, Hungary, ⁴University of Pécs, Department of Psychiatry and Psychotherapy, Pécs, Hungary, ⁵University of Szeged, Department of Medical Physics and Informatics, Szeged, Hungary

¹Department of Gastroenterology, Galilee Medical Center, Bar Ilan University, Safed- Israel, Naharia, Israel, ²Hadassah Medical Organization, Department of Gastroenterology and liver disease, Jerusalem, Israel, ³EMMS Nazreth Hospital, Gastroenterology and Endoscopy Units, Nazareth, Israel

Lefkoşa State Hopital Education and Research Hospital, Gastroenterology, Lefkoşa/Turkish side, Cyprus

¹Department of Chronic Diseases- Metabolism and Ageing, KU Leuven, Leuven, Belgium, ²Department of Human Genetics, KU Leuven, Leuven, Belgium, ³University of Antwerp, Department of Biomedical sciences, Antwerp, Belgium, ⁴Radboud University Medical Center, Department of Human Genetics, Nijmegen, The Netherlands

¹London Health Sciences Centre, Medicine, London, Canada, ²Western University, Medicine, London, Canada

¹Tohoku University Graduate School of Medicine, Division of Gastroenterology, Sendai, Japan, ²Graduate School of Medical Sciences- Kyusyu University, Department of Medicine and Clinical Science, Fukuoka, Japan, ³National hospital organization NHO Nagasaki Medical Center, Clinical Research Center, Omura, Japan, ⁴Saga University, Department of Endoscopic Diagnostics and Therapeutics, Saga, Japan, ⁵Iwate Medical University, Division of Gastroenterology- Department of Internal Medicine- Faculty of Medicine, Morioka, Japan

¹Amsterdam UMC location AMC, Gastroenterology and Hepatology, Amsterdam, The Netherlands, ²Tytgat Institute for Liver and Intestinal Research- Amsterdam UMC, Gastroenterology, Amsterdam, The Netherlands, ³Genome Diagnostics Laboratory- Amsterdam UMC location AMC, Clinical Genetics, Amsterdam, The Netherlands, ⁴John Radcliffe Hospital, Translational Gastroenterology Unit, Oxford, UK

¹Institute of Human Genetics- Polish Academy of Sciences, Department of Nucleic Acid Function, Poznan, Poland, ²Poznan University of Medical Sciences, Department of Gastroenterology- Dietetics and Internal Diseases, Poznan, Poland, ³Institute of Molecular Biology and Biotechnology- Faculty of Biology- Adam Mickiewicz University, Department of Computational Biology, Poznan, Poland, ⁴Poznan University of Medical Sciences, Department of Computer Sciences and Statistics, Poznan, Poland

¹University Hospital Zurich, Gastroenterology and Hepatology, Zurich, Switzerland, ²University of Lausanne, Center for Primary Care and Public Health Unisanté, Lausanne, Switzerland, ³Private Practice, Center for Gastroenterology and Hepatology, Zurich, Switzerland, ⁴Inselspital Bern, Gastroenterology and Hepatology, Bern, Switzerland, ⁵KU Leuven- Leuven- Belgium, Department of Human Genetics, Leuven, Belgium

¹Division of Immunology and Allergy, Department of Medicine- Solna- Karolinska Institutet and University Hospital- 17176 Stockholm- Sweden. Center of Molecular Medicine- 17176, Stockholm, Sweden, ²Department of Medicine, University Medical Center, Hamburg-Eppendorf, Germany, ³Gastroenterology unit- Patient Area Gastroenterology- Dermatovenereology and Rheumatology- Karolinska University Hospital- Stockholm- Sweden, Department of Medicine- Solna- Karolinska Institutet- 17176, Solna, Sweden

¹Humanitas Research Hospital, IBD Center, Milano, Italy, ²Humanitas Research Hospital, IBD Center/Department of Biomedical Sciences, Milano, Italy, ³Cleveland Clinic, Department of Gastroenterology, Cleveland, USA, ⁴Humanitas Research Hospital, Dept. Biomed. Sciences, Milano, Italy, ⁵Icahn School of Medicine at Sinai, Department of Pathology, New York, USA, ⁶Icahn School of Medicine at Sinai, Division of Genetics and Genomic Sciences, New York, USA, ⁷Icahn School of Medicine at Sinai, The Henry D. Janowitz Division of Gastroenterology, New York, USA

¹Inje University Haeundae Paik Hospital, Department of Internal Medicine, Busan, Republic of Korea, ²Inje University College of Medicine, Department of Microbiology and Immunology, Busan, Republic of Korea, ³Eunpyeong St. Mary’s Hospital- College of Medicine- The Catholic University of Korea, Department of Internal Medicine-, Seoul, Republic of Korea, ⁴Pusan National University School of Medicine and Biomedical Research Institute- Pusan National University Hospital, Department of Internal Medicine, Busan, Republic of Korea, ⁵Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea, Department of Internal Medicine, Busan, Republic of Korea

¹Grupo de Estudos em Doença Inflamatória Intestinal, 1Instituto Português de Oncologia de Lisboa, Gastroenterology, Lisbon, Portugal, ²Instituto Português de Oncologia de Lisboa, Molecular Pathobiology Investigation Unit, Lisbon, Portugal, ³Instituto Português de Oncologia de Lisboa, Pathology, Lisbon, Portugal, ⁴Centro Hospitalar de São João, Gastroenterology, Porto, Portugal, ⁵Centro Hospitalar de São João, Pathology, Porto, Portugal, ⁶Centro Hospitalar Universitário do Algarve- Unidade de Portimão, Gastroenterology, Portimão, Portugal, ⁷Centro Hospitalar Universitário do Algarve- Unidade de Portimão, Pathology, Portimão, Portugal, ⁸Hospital Garcia de Orta, Gastroenterology, Almada, Portugal, ⁹Hospital Garcia de Orta, Pathology, Almada, Portugal, ¹⁰Centro Hospitalar do Porto- EPE–Hospital de Santo António, Gastroenterology, Porto, Portugal, ¹¹Centro Hospitalar do Porto- EPE–Hospital de Santo António, Pathology, Porto, Portugal

¹College of Medicine- Ewha Womans University, Health Promotion Center, Seoul, Republic of Korea, ²Yonsei University College of Medicine, Internal Medicine, Seoul, Republic of Korea, ³Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea, ⁴Internal Medicine, College of Medicine- Ewha Womans University, Seoul, Republic of Korea, ⁵College of Medicine- Ewha Womans University, Internal Medicine, Seoul, Republic of Korea, ⁶Korea University College of Medicine, Internal Medicine, Seoul, Republic of Korea

University of Glasgow, Bacteriology, Glasgow, UK

¹New York University School of Medicine, Gastroenterology, New York, USA, ²New York University School of Medicine, Microbiology, New York, USA

¹Department of Clinical and Molecular Medicine- Faculty of Medicine and Health Science, NTNU - Norwegian University of Sciences and Technology, Trondheim, Norway, ²Department of Gastroenterology, St. Olav’s Hospital- Trondheim University Hospital, Trondheim, Norway, ³Centre of Molecular Inflammation Research, NTNU - Norwegian University of Sciences and Technology, Trondheim, Norway, ⁴Department of Pathology, St. Olav’s Hospital- Trondheim University Hospital, Trondheim, Norway

Department of Internal Medicine, Hanyang University Guri Hospital, Guri, Republic of Korea

¹GoodGut SL, IBD Department, Girona, Spain, ²University of Girona, Department of Biology, Girona, Spain, ³GoodGut SL, Chief Executive Officer, Girona, Spain, ⁴Institut d’Investigació Biomèdica de Girona, Digestiu, Girona, Spain, ⁵Hospital Universitari de Bellvitge, Aparell Digestiu, Hospitalet de Llobregat, Spain, ⁶Hospital Universitari Germans Trias i Pujol de Badalona, Aparell Digestiu, Badalona, Spain, ⁷Hospital Universitari Doctor Josep Trueta de Girona, Aparell Digestiu, Girona, Spain, ⁸Hospital de Santa Caterina, Aparell Digestiu, Salt, Spain