G. Condino¹, E. Calabrese¹, S. Onali¹, E. Lolli¹, M. Ascolani¹, F. Zorzi¹, G. Sica¹, C. Petruzziello¹, F. Pallone¹, L. Biancone¹, ¹Università Tor Vergata, Roma, Roma, Italy

V. Warren, A. Rehman, C. Williams, S. Mumtaz, H. Bholah, D. Gracie, J. Hamlin, A. Ford, C. Selinger*

St Jame's University Hospital, Center for Digestive Diseases, Leeds, United Kingdom

S.M. Devlin¹, G.Y. Melmed², P.M. Irving³, D.T. Rubin⁴, A. Kornbluth⁵, P.L. Kozuch⁶, L.E. Raffals⁷, F.S. Velayos⁸, M.P. Sparrow⁹, L. Baidoo¹⁰, B. Bressler¹¹, A.S. Cheifetz¹², J. Jones¹³, G.G. Kaplan¹, J. Greene¹⁴, C.A. Siegel¹⁴, ¹The University of Calgary, Gastroenterology, Calgary, Canada, ²Cedars-Sinai Medical Center, Medicine, Los Angeles, United States, ³Guy's & St Thomas' Hospitals, Medicine, London, United Kingdom, ⁴University of Chicago, Medicine, Chicago, United States, ⁵Icahn School of Medicine at Mount Sinai, Medicine, New York, United States, ⁶Jefferson University, Medicine, Philadelphia, United States, ⁷Mayo Clinic, Gastroenterology, Rochester, United States, ⁸University of California San Francisco, Gastroenterology, San Francisco, United States, ⁹The Alfred Hospital, Medicine, Melbourne, Australia, ¹⁰University of Pittsburgh, Gastroenterology, Pittsburgh, United States, ¹¹University of British Columbia, Gastroenterology, Vancouver, Canada, ¹²Beth Israel Deaconess Medical Center, Harvard Medical School, Gastroenterology, Boston, United States, ¹³University of Saskatchewan, Gastroenterology, Saskatoon, Canada, ¹⁴Dartmouth-Hitchcock Medical Center, Gastroenterology, Lebanon, United States

M. Lukas¹, G. Rydzewska², M. Diculescu³, J. Lange⁴, D. Mitchell⁴, ¹IBD Clinical and Research Centre, ISCARE Lighthouse, Charles University, Prague, Czech Republic, ²Department of Internal Medicine and Gastroenterology, Central Clinical Hospital of Ministry of Internal Affairs and Administration, Warszawa, Poland, ³Gastroenterology and Hepatology Centre, Fundeni Clinical Institute, Bucharest, Romania, ⁴Vifor Pharma, Glattbrugg, Switzerland

C. Gower-Rousseau*¹, H. Sarter¹, N. Tavernier², G. Savoye³, M. Fumery⁴, A. Duhamel⁵, N. Guillon-Dellac¹, A. Cieza⁶, J.-F. Colombel⁷, L. Peyrin-Biroulet⁸

¹Lille University Hospital, Epidemiology, Lille, France, ²Lille University Hospital, Gastroenterology, Lille, France, ³Rouen University Hospital, Gastroenterology, Rouen, France, ⁴Amiens University Hospital, Gastroenterology, Amiens, France, ⁵Lille University Hospital , Biostatistics, Lille, France, ⁶University of Southampton, Faculty of Social and Human Sciences, Southampton, United Kingdom, ⁷Icahn School of Medicine at Mount Sinai, Department of Medicine, New York City, United States, ⁸Nancy University Hospital , Gastroenterology , Nancy, France

R. Wylde¹, A. Carey^2,3, B. Bourke^2,3,4, A. Broderick³, S. Quinn³, M. Hamzawi³, K. Gleeson³, S. Hussey^2,3,4, ¹Leiden University, Leiden University Medical Centre, Leiden, Netherlands, ²National Childrens Research Centre, NCRC, Dublin, Ireland, ³Our Lady's Childrens Hospital Crumlin, Dept. of Gastroenterology, Hepatology and Nutrition, Dublin, Ireland, ⁴University College Dublin (UCD), School of Medicine and Medical Science, Dublin, Ireland

P. Valer¹, A. Algaba¹, E. Nieto², I. Guerra¹, M. Chaparro³, P. López-Serrano⁴, E. Quintanilla⁵, B. Piqueras¹, A. Bermejo¹, J.P. Gisbert³, Á. Paéz⁶, F. Bermejo¹, ¹Hospital Universitario de Fuenlabrada, Gastroenterology, Fuenlabrada, Spain, ²Hospital Universitario de Fuenlabrada, Laboratory, Fuenlabrada, Spain, ³Hospital Universitario de La Princesa, and Instituto de Investigación Sanitaria Princesa (IP), Madrid Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Gastroenterology, Madrid, Spain, ⁴Hospital Universitario Fundación Alcorcón, Gastroenterology, Alcorcón, Spain, ⁵Hospital Severo Ochoa, Gastroenterology, Leganés, Spain, ⁶Hospital Universitario de Fuenlabrada, Urology, Fuenlabrada, Spain

M. Fraquelli¹, F. Branchi^{1, 2}, M. Cribiù³, A. Magarotto^{1, 2}, S. Massironi¹, S. Orlando^{1, 2}, F. Botti^{2, 4}, E. Contessini Avesani^{2, 4}, D. Conte^{1, 2}, G. Basilisco¹, F. Caprioli*^{1, 2}

¹Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Gastroenterology and Endoscopy Unit, Milan, Italy, ²Università degli Studi di Milano, Department of Pathophysiology and Transplantation, Milan, Italy, ³Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Pathology Unit, Milan, Italy, ⁴Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, General and Emergency Surgery Unit, Milan, Italy

S. Fernandes¹, L. Correia¹, A. Rita Gonçalves¹, A. Valente¹, P. Moura Santos¹, C. Baldaia¹, N. Fatela¹, P. Alexandrino¹, M. Cortes², J. Velosa¹, ¹Centro Hospitalar Lisboa Norte, Gastrenterology, Lisbon, Portugal, ²Centro Hospitalar Lisboa Norte, Internal Medicine, Lisbon, Portugal

C.N. Manser¹, I. Mecklenburg², C. Knellwolf³, C. Meyenberger³, F. Seibold⁴, C. Muenger-Beyeler⁴, L. Biedermann¹, S. Vavricka⁵, P. Frei⁶, G. Rogler¹, ¹University Hospital of Zurich, Clinic of Gastroenterology and Hepatology, Zurich, Switzerland, ²University Hospital of Basel, Clinic of Gastroenterology and Hepatology, Basel, Switzerland, ³Cantonal Hospital St. Gallen, Division of Gastroenterology and Hepatology, St.Gallen, Switzerland, ⁴Tiefenau Spital Bern, Division of Gastroenterology, Bern, Switzerland, ⁵Triemlispital Zurich, Department of Gastroenterology and Hepatology, Zurich, Switzerland, ⁶See Spital Horgen, Gastroenterology Unit, Clinic of Internal Medicine, Horgen, Switzerland

E. Langholz¹, R. Wilkens*^{2, 3, 4, 5}, H. Glerup⁴

¹Gentofte Hospital, Department of Medical Gastroenterology, Copenhagen, Denmark, ²University of Calgary, Department of Radiology, Calgary, Canada, ³University of Calgary, Department of Medicine, Division of Gastroenterology, Calgary, Canada, ⁴Regional Hospital Silkeborg, University Research Clinic for Innovative Patient Pathways, Diagnostic Center, Division of Gastroenterology, Silkeborg, Denmark, ⁵Aarhus University Hospital, Department of Hepatology and Gastroenterology, Aarhus, Denmark

K. Argyriou¹, A. Kapsoritakis¹, E. Tsakiridou², S. Potamianos¹, ¹University Hospital of Larissa, Gastroenterology and Hepatology, Larissa, Greece, ²University of Thessaly, Medical School of Larissa, Larissa, Greece