¹Aarhus University Hospital, Hepatology and Gastroenterology, Aarhus, Denmark

¹São Paulo State University (Unesp), Medical School, Department of Internal Medicine, Botucatu, Brazil, ²São Paulo State University (Unesp), Medical School, Department of Nursing, Botucatu, Brazil, ³São Paulo State University (Unesp), Medical School, Department of Surgery, Botucatu, Brazil

¹Dorset County Hospital Foundation Trust, Gastroenterology, Dorchester, UK, ²Stepping Hill Hospital, Gastroenterology, Stockport, UK

¹The Children’s Memorial Health Institute, Department of Gastroenterology, Hepatology and Immunology, Warszawa, Poland, ²Children's Memorial Health Institute, 1Department of Gastroenterology, Hepatology, Feeding disorders and Pediatrics, Warszawa, Poland

¹University Medical Centre, Clinical Department of Gastroenterology, Ljubljana, Slovenia, ²University of Ljubljana, Faculty of Pharmacy, Ljubljana, Slovenia

¹Azienda Ospedaliera di Padova, Padova, Italy

¹Kyungpook National University, College of Nursing, Daegu, South Korea, ²Kyungpook National University Hospital, Division of Gastroenterology, Department of Internal Medicine, Daegu, South Korea, ³Keimyung College University, Department of Nursing, Daegu, South Korea

¹Great Ormond Street Hospital, London, UK

¹Stockport Foundation NHS Trust, Gastroenterology, Stockport, UK, ²Macclesfield District General Hospital, Gastroenterology, Macclesfield, UK, ³Royal Blackburn Hospital, Gastroenterology, Blackburn, UK

¹Aneurin Bevan University Health Board, Gastroenterology Ambulatory Unit, Newport, UK

¹Karolinska Institutet Danderyd Hospital, Department of Clinicla Science, Stockholm, Sweden, ²GHP Stockholm Gastro Center, Stockholm, Sweden

¹Great Ormond Street Hospital, Gastroenterology, London, UK

¹Universitair Medisch Centrum Groningen, Gastroenterology and Hepatology, Groningen, The Netherlands, ²Massachusetts General Hospital, Molecular Biology, Boston, MA, USA, ³Broad Institute, Boston, MA, USA, ⁴Universitair Medisch Centrum Groningen, Genetics, Groningen, The Netherlands, ⁵Universitair Medisch Centrum Groningen, Pediatrics, Groningen, The Netherlands

¹Virginia Commonwealth University, Internal Medicine, Richmond, VA, USA

¹University of Valencia, Pharmacology, Valencia, Spain, ²Hospital Dr Peset, Valencia, Spain, ³University of Valencia, Medicine, Valencia, Spain

¹Institute for Research and Innovation in Health (i3S), Immunology, Cancer and GlycoMedicine, Porto, Portugal, ²Medical Faculty, Department of Community Medicine, Information and Health Decision Sciences, Porto, Portugal, ³Porto Centre Hospital, Gastroenterology, Porto, Portugal

¹Dalhousie University, Halifax, Canada, ²IWK Center, Halifax, Canada, ³University Alberta, Edmonton, Canada, ⁴Schneider Medical Center, Petach Tikva, Israel, ⁵Wolfson Medical Center, Holon, Israel, ⁶Meyer Hospital, Haifa, Israel, ⁷Kaplan Hospital, Rehovot, Israel, ⁸Dana Childrens Hospital, Tel Aviv, Israel, ⁹HaEmek Hospital, Afula, Israel, ¹⁰French Hospital, Nazareth, Israel, ¹¹Poriah Hospital, Tiberias, Israel, ¹²Hadassah Hospital, Jerusalem, Israel, ¹³Tel Aviv University, Tel Aviv, Israel, ¹⁴Mount Saint Vincent University, Halifax, Canada

¹University Hospital Zurich, Department of Gastroenterology and Hepatology, Zurich, Switzerland, ²Bern University Hospital, Department of Visceral Surgery and Medicine Bern, Switzerland, ³University Hospital Zurich, Consultation-Liaison Psychiatry and Psychosomatic Medicine, Zurich, Switzerland, ⁴University of Bern, Maurice Müller Laboratories, Bern, Switzerland

¹Earlham Institute, Norwich, UK, ²Quadram Institute, Norwich, UK, ³Norwich Medical School, University of East Anglia, Norwich, UK, ⁴KU Leuven, Department of Chronic Diseases, Metabolism and Ageing, Translational Research Center for Gastrointestinal Disorders (TARGID), Leuven, Belgium, ⁵University of Liverpool, National Institute of Health Research, Liverpool, UK, ⁶School of Biological Sciences, University of East Anglia, Norwich, UK

¹Academic Medical Centre, Amsterdam, The Netherlands, ²Medical University of Vienna, Vienna, Austria, ³University of Washington, Seattle, WA, USA, ⁴Clinic of Gastroenterology and Hepatology, Military Medical Academy, Belgrade, Serbia, ⁵University Hospital of Liège, Liège, Belgium, ⁶Nicolaus Copernicus University, Collegium Medicum in Bydgoszcz, Bydgoszcz, Poland, ⁷University Hospital Ulm, Ulm, Germany, ⁸University Hospital Schleswig-Holstein, Christian-Albrechts-University of Kiel, Kiel, Germany, ⁹Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, South Korea, ¹⁰University of Nice Sophia Antipolis, Hospital l’Archet, Nice, France, ¹¹Zymo Consulting Group, Newtown Square, PA, USA, ¹²Pfizer, Cambridge, MA, USA, ¹³Shire, Zug, Switzerland, ¹⁴Shire, Lexington, MA, USA, ¹⁵University of California San Diego, La Jolla, CA, USA