¹Kath. Krankenhaus Hagen, Hagen, Germany, ²Klinikum Bogenhausen, München, Germany, ³Jagiellonian University Medical College, Krakow, Poland, ⁴Royal London Hospital, London, UK, ⁵Royal Hospital for Children, Glasgow, UK, ⁶Villafranca del Hospital Universitario de Basurto, Bilbao, Spain, ⁷Canberra Hospital, Canberra, Australia, ⁸Cabinet Medical Créteil, Paris, France, ⁹Cochin Hospital, Paris, France, ¹⁰CHU Dinant-Godinne, Department of Gastroenterology, Yvoir, Belgium, ¹¹Triemli Hospital, Zürich, Switzerland, ¹²University and Medical School of Ioannina, Ioannina, Greece, ¹³Hospital Universitari Germans Trias I Pujol, Badalona, Spain, ¹⁴CIBEREHD, Madrid, Spain

¹GIGA-R, ULiège, Translational Gastroenterology, Liège, Belgium, ²CHU de Liège, Hepato-Gastroenterology and Digestive oncology, Liège, Belgium, ³CHU de Liège, Pathological anatomy and cytology, Liège, Belgium, ⁴GIGA proteomic facility, ULiège, Liège, Belgium, ⁵ULiège, Laboratory of mass spectrometry, Chemistry, Liège, Belgium, ⁶GIGA-R, ULiège, Laboratory of Thrombosis and Hemostasis, Liège, Belgium, ⁷ULiège, Mammalian cell culture laboratory, Liège, Belgium, ⁸CHU de Liège, Abdominal Surgery Department, Liège, Belgium, ⁹CHC de Liège, Gastroenterology, Liège, Belgium, ¹⁰CHR Citadelle de Liège, Gastroenterology and Digestive oncology, Liège, Belgium

Academic Medical Center (AMC), Department of Surgery, Amsterdam, The Netherlands

¹Service of Gastroenterology and Hepatology, CHUV, University of Lausanne, Lausanne, Switzerland, ²Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland, ³Institute of Pathology, CHUV, Lausanne, Switzerland, ⁴Clinic for Visceral Surgery and Medicine, Department of Gastroenterology; University Hospital Bern Inselspital, Bern, Switzerland

¹BSRC "Alexander Fleming", Vari, Greece, ²University of Cologne, Institute of Genetics, Cologne, Germany, ³University of Athens, School of Medicine, Athens, Greece

¹King's College London, Nutritional Sciences, London, UK, ²Queen Mary University of London, Centre for Immunobiology, London, UK, ³Institut National de la Recherche Agronomique, Microbiology, Paris, France, ⁴King's College London, Dental Institute, London, UK, ⁵Guy's and St Thomas' NHS Foundation Trust, Nutrition and dietetics, London, UK, ⁶Barts Health NHS Trust, Gastroenterology, London, UK, ⁷Guy's and St Thomas' NHS Foundation Trust, Gastroenterology, London, UK

¹Icahn School of Medicine at Mount Sinai, Gastroenterology, New York, USA, ²Hospital Beatriz Ângelo, Gastroenterology, Loures, Portugal, ³Icahn School of Medicine at Mount Sinai, Precision Immunology Institute, New York, USA, ⁴Icahn School of Medicine at Mount Sinai, Department of Genetics and Genomic Sciences, New York, USA, ⁵Icahn School of Medicine at Mount Sinai, Institute for Genomics and Multiscale Biology, New York, USA

¹Klinikum rechts der Isar, II. Med. Klinik, Munich, Germany, ²Institute of Med. Microbiology, TUM, Munich, Germany, ³University of California, San Diego, San Diego, USA, ⁴Memorial Sloan Kettering Cancer Center, New York, USA

¹Sheba Medical Center, Tel Hashomer, Israel, ²Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA

¹Rabin Medical Center, Division of Gastroenterology, Petah Tikva, Israel, ²Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel, ³Clalit health services, Jerusalem, Israel, ⁴Sheba Medical Center affiliated with Sackler faculty of medicine Tel Aviv University, Internal Medicine T, Ramat Gan, Israel

¹St Mark's Academic Institute, Robin Phillip's Fistula Research Unit, London, UK, ²King's College London, Florence Nightingale School of Nursing and Midwifery, London, UK, ³University of Greenwich, Adult Nursing and Paramedic Science, London, UK, ⁴St Mark's Hospital, Department of Surgery, London, UK, ⁵University Hospitals Birmingham, Surgery, Birmingham, UK, ⁶Homerton University Hospital, Macmillan Cancer Care, London, UK, ⁷London, London, UK, ⁸St Mark's Hospital, Department of Radiology, London, UK, ⁹St Mark's Hospital, Department of IBD, London, UK

¹St Mark's Academic Institute, Robin Phillip's Fistula Research Unit, London, UK, ²King's College London, Florence Nightingale School of Nursing and Midwifery, London, UK, ³University of Greenwich, Adult Nursing and Paramedic Science, London, UK, ⁴St Mark's Hospital, Department of Surgery, London, UK, ⁵University Hospitals Birmingham, Surgery, Birmingham, UK, ⁶Homerton University Hospital, Macmillan Cancer Care, London, UK, ⁷London, London, UK, ⁸St Mark's Hospital, Department of Radiology, London, UK, ⁹St Mark's Hospital, Department of IBD, London, UK

Odense Universitets Hospital, Department of Medical Gastroenterology, Odense, Denmark

¹Karolinska Institutet, NVS, Division of Nursing, Huddinge, Sweden, ²Karolinska Institutet, Department of Medicine, Stockholm, Sweden, ³Karolinska University Hospital, Gastroenterology Unit, Stockholm, Sweden

¹University of Padova, Department of Medicine, Padova, Italy, ²University of Padova, Department of Surgical, Oncological and Gastroenterological Sciences, Padova, Italy, ³Azienda Ospedaliera di Padova, UOC Gastroenterologia, Padova, Italy, ⁴Azienda Ospedaliera di Padova, UOSD Progetti e Ricerca Clinica, Padova, Italy

¹Hospital San Juan de Dios del Aljarafe, Internal Medicine, Seville, Spain, ²University of Seville, Nursing Department, Seville, Spain, ³University of Seville, Physiotherapy Department, Seville, Spain, ⁴San Juan de Dios del Aljarafe Hospital, Surgery Service, Seville, Spain

Faculdade de Medicina da USP, Gastroenterology, São Paulo, Brazil

¹Federal University of Rio de Janeiro, Internal Medicine, Rio de Janeiro, Brazil, ²Nestle Research Center, Digestive Health - Nutrition and Health Research, Lausanne, Switzerland

¹Linköping University, Department of Primary Health Care in Kalmar County Council of Kalmar, Sweden, Blomstermåla, Sweden, ²Linköping University, Research and Development Unit and Department of Medical and Health Sciences, Linköping, Sweden, ³Linköping University, Department of Gastroenterology and Department of Clinical and Experimental Medicine, Linköping, Sweden, ⁴Linköping University, Centre for Organisational Support and Development, Region Östergötland, Linköping, Sweden, ⁵County council of Jönköping, Department of Medicine, County Hospital Ryhov, Jönköping, Sweden, ⁶University of Pennsylvania, US., Prof School of Nursing, Philadelphia, USA, ⁷Linköping university, Anaesthetics, Operations and Speciality Surgery Centre and Department of Medical and Health Sciences, Linköping, Sweden

Azienda Ospedaliera di Padova, Surgery Oncology and Gastroenterology, Padua, Italy