AMAG Pharmaceuticals, Inc., Waltham, USA

¹Hospital Universitari Germans Trias i Pujol, Gastroenterology, Badalona, Barcelona, Spain, ²Hospital Universitari Germans Trias i Pujol, Department of Gastroenterology, Badalona, Barcelona, Spain, ³CIBEREHD, Madrid, Spain, ⁴Hospital Universitari Germans Trias i Pujol, Department of Immunology, Badalona, Barcelona, Spain

¹Stanford Medical Center, Stanford, USA, ²Janssen Research and Development, LLC, Spring House, USA

¹University of Messina, IBD-unit, Department of Clinical and Experimental Medicine, Messina, Italy, ²Catholic University, IBD Unit Complesso Integrato Columbus, Fondazione Policlinico Gemelli, Rome, Italy, ³University of Palermo, "Villa Sofia-Cervello" Hospital, Di.Bi.M.I.S., Division of Internal Medicine, Palermo, Italy, ⁴Humanitas Research Hospital, Rozzano, IBD Center, Department of Gastroenterology, Milan, Italy, ⁵Ospedale Maggiore Policlinico, Milan, Gastroenterology and Endoscopy Unit, Fondazione IRCCS Cà Grande, Milano, Italy, ⁶University of Padua, Gastroenterology Unit, Department of Surgical, Oncological, and Gastroenterological Sciences, Padova, Italy, ⁷IRCCS “Casa Sollievo della Sofferenza”, San Giovanni Rotondo, Division of Gastroenterology, Foggia, Italy, ⁸University of Rome "Tor Vergata", Department of Systems Medicine, Rome, Italy

¹CHU Liège, Liège, Belgium, ²CHU Liège, Gastroenterology, Liège, Belgium

¹IRCSS Casa Sollievo della Sofferenza, Gastroenterology and Digestive Endoscopy Unit, San Giovanni Rotondo, Italy, ²University of Padua, Padua, Italy, ³Sacro Cuore Don Calabria Hospital, Negrar, Italy, ⁴Humanitas Clinical and Research Institute, IBD Center, Department of Gastroenterology, Rozzano, Italy, ⁵Cannizzaro Hospital, Catania, Italy, ⁶Catholic University of Sacred Heart, Internal Medicine and Gastroenterology, Rome, Italy, ⁷Brotzu Hospital, Gastroenterology Unit, Department of Medicine, Cagliari, Italy, ⁸S. Maria del Prato Hospital, Gastroenterology and Digestive Endoscopy Unit, Feltre, Italy, ⁹Humanitas Clinical and Research Institute, Rozzano, Italy, ¹⁰Humanitas University, Biomedical Sciences, Rozzano, Italy

¹ISCARE I.V.F. a.s., IBD Clinical and Research Centre, Prague, Czech Republic, ²1st Medical Faculty, Charles University, Institute of Pharmacology, Prague, Czech Republic, ³Military Hospital, Charles University, Department of Internal Medicine, Prague, Czech Republic, ⁴1st Medical Faculty and General Teaching Hospital, Charles University, Institute of Medical Biochemistry, Prague, Czech Republic

University College London Hospital, Department of Gastroenterology, London, UK

¹DGD Clinics Sachsenhausen, Frankfurt/Main, Germany, ²Interdisciplinary Crohn Colitis Centre Rhein-Main, Frankfurt/Main, Germany, ³Hacettepe University, Faculty of Health Sciences, Ankara, Turkey

¹Department of Gastroenterology and Hepatology, Linköping, Sweden, ²Department of Pathology, Linköping, Sweden, ³Department of Gastroenterology and Hepatology, Linköping, Sweden

Beaumont Hospital, Colorectal and General Surgery, Dublin, Ireland

¹King's College London, Faculty of Nursing and Midwifery and Palliative Care, London, UK, ²King's College London, Health Psychology Section, London, UK, ³Imperial College Healthcare NHS Trust, Pain Service, London, UK, ⁴King's College London, Faculty of Life Sciences and Medicine, London, UK

¹Russells Hall Hospital, Gastroenterology, Birmingham, UK, ²Solihull Hospital, Gastroenterology, Birmingham, UK, ³New Cross Hospital, Gastroenterology, Birmingham, UK, ⁴Queen Elizabeth Hospital, Gastroenterology, Birmingham, UK, ⁵Walsall Manor Hospital, Gastroenterology, Birmingham, UK

¹University of Pisa, New Technologies and Translational Medicine, Pisa, Italy, ²Pisa University Hospital, General Surgery and Gastroenterology, Pisa, Italy

Yokkaichi Hazu Medical Centre, Inflammatory Bowel Disease Centre, Yokkaichi, Japan

¹Hospital Universitario de Gran Canaria Dr. Negrin, Gastroenterology, Las Palmas, Spain, ²Hospital Universitario de Gran Canaria Dr. Negrin, Investigation Unit, Las Palmas, Spain, ³Hospital Universitario de Gran Canaria Dr. Negrin, Clinical Analisys Laboratory, Las Palmas, Spain

¹University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium, ²KU Leuven, Translational Research in Gastrointestinal Disorders, Department of Chronic Diseases, Metabolism and Ageing, Leuven, Belgium, ³University Hospitals Leuven, Dpt. Abdominal Surgery, Leuven, Belgium

Fukuoka University Chikushi Hospital, Chikushino, Japan

¹St Mark's Hospital, Colorectal Surgery, London, UK, ²Università della Campania “Luigi Vanvitelli”, Naples, Italy, ³University of Kelaniya, Kelaniya, Sri Lanka, ⁴Academic Medical Center (AMC) University of Amsterdam, Amsterdam, The Netherlands, ⁵St Mark's Hospital, IBD/Physiology, London, UK, ⁶St Mark's Hospital, Gastrointestinal Imaging, London, UK

St Vincent's Hospital Melbourne, Department of Gastroenterology, Melbourne, Australia