K.V. Patel*¹, C.I. Amadi¹, S. Fong¹, I. Nasr¹, N. Griffin², E. Westcott³, A.B. Williams³, A.A. Darakhshan³, S.H. Anderson¹, P.M. Irving¹, J.D. Sanderson¹

¹Guy's and St Thomas' NHS Foundation Trust, Gastroenterology, London, United Kingdom, ²Guy's and St Thomas' NHS Foundation Trust, Radiology, London, United Kingdom, ³Guy's and St Thomas' NHS Foundation Trust, Colorectal Surgery, London, United Kingdom

E. Saritas Yuksel¹, C. Cekic¹, F. Topal¹, Z.Z. Gumus¹, B. Unsal¹, Z. Akpinar¹, ¹IKÇU Ataturk Research and Teaching Hospital, Gastroenterology, Izmir, Turkey

R. Vadan¹, L. Gheorghe¹, R. Cerban¹, B. Cotruta¹, L. Tugui¹, I. Stanel¹, C. Angelescu¹, I. Bancila¹, M. Diculescu¹, C. Gheorghe¹, ¹Fundeni Clinical Institute, Gastroenterology and Hepatology Center, Bucharest, Romania

M. Ishii*¹, K.-i. Tarumi¹, T. Kamada¹, M. Fujita¹, H. Matsumoto¹, T. Murao¹, R. Nakato¹, M. Osawa¹, S. Hirai¹, S. Fukushima¹, N. Manabe², H. Kusunoki³, A. Shiotani¹, J. Hata², K. Haruma¹

¹Kawasaki Medical School, Division of Gastroenterology Department of Internal Medicine, Kurashiki, Japan, ²Kawasaki Medical School, Clinical Pathology and Laboratory Medicine, Kurashiki, Japan, ³Kawasaki Medical School, Genaral Medicine, Kurashiki, Japan

S. Dharmasiri, H. Johnson, S. McLaughlin, S. Weaver, Royal Bournemouth Hospital, Depatment of Gastroenterology, Bournemouth, United Kingdom

M. Cesarini¹, K. Katsanos², P. Ellul³, P. Lakatos⁴, K. Papamichael⁵, F. Caprioli⁶, E. Tsianos², G. Mantzaris⁵, S. Danese⁷, G. Fiorino⁷, ¹Sapienza University of Rome, Medicina Interna e Specialità Mediche, Rome, Italy, ²University of Ioannina, Greece, ³Mater Dei Hospital, Malta, ⁴Semmelweis University, Budapest, Hungary, ⁵Evangelismos Hospital, Athens, Greece, ⁶University of Milan, Italy, ⁷IRCCS Humanitas, IBD Center, Rozzano, Italy

H.J. Kim*, J.M. Cho, K.M. Kim, S.H. Oh

Seoul Asan Medical Center , Pediatrics , Seoul , South Korea

E. Volonaki, V. La Vela, R. Dziubac, F. Kiparissi, N. Shah, K.J. Lindley, M. Elawad, Great Ormond Street Hospital, Paediatric Gastroenterology, London, United Kingdom

E. De Greef¹, B. Maus², I. Hoffman³, F. Smets⁴, S. Van Biervliet⁵, M. Scaillon⁶, B. Hauser⁷, I. Paquot⁸, P. Alliet⁹, W. Arts¹⁰, O. Dewit¹¹, H. Peeters¹², F. Baert¹³, G. D'Haens¹⁴, J.-F. Rahier¹⁵, I. Etienne¹⁶, O. Bauraind⁸, A. Van Gossum¹⁷, S. Vermeire¹⁸, F. Fontaine¹⁹, V. Muls²⁰, E. Louis²¹, F. Van De Mierop²², J. Coche²³, J.J. Mahachie², K. Van Steen², G. Veereman²⁴, ¹UZ Brussels, Pediatric Gastroenterology, Jette, Belgium, ²ULG, Montefiore Institute, Liege, Belgium, ³Uz Gasthuisberg, Pediatric Gastroenterology, Leuven, Belgium, ⁴UCL St Luc, Pediatric Gastroenterology, Brussel, Belgium, ⁵UZ Gent, Pediatric Gastroenterology, Gent, Belgium, ⁶Hôpital des enfants Reine Paola, Pediatric Gastroenterology, Brussel, Belgium, ⁷UZ Brussels, Pediatric Gastroenterology, Brussel, Belgium, ⁸CHC Clinique de l'Esperance, Pediatric Gastroenterology, Liege, Belgium, ⁹Jessa Hospital, Pediatric Gastroenterology, Hasselt, Belgium, ¹⁰ZOL, Pediatric Gastroenterology, Genk, Belgium, ¹¹UCL St Luc, Gastroenterology, Brussel, Belgium, ¹²UZ Gent, Gastroenterology, Gent, Belgium, ¹³Heilig Hart Hospital, Gastroenterology, Roesselare, Belgium, ¹⁴AMC, Gastroenterology, Amsterdam, Netherlands, ¹⁵UCL Montgodinne, Gastroenterology, Mont Godinne, Belgium, ¹⁶CHR Citadelle, Pediatric Gastroenterology, Liege, Belgium, ¹⁷ULB Erasme, Gastroenterology, Brussel, Belgium, ¹⁸Uz Gasthuisberg, Gastroenterology, Leuven, Belgium, ¹⁹CHU St Joseph, Gastroenterology, Liege, Belgium, ²⁰ULB St Pierre, Gastroenterology, Brussel, Belgium, ²¹ULG, Gastroenterology, Liege, Belgium, ²²AZ St Augustinus, Gastroenterology, Wilrijk, Belgium, ²³Clinique Saint Pierre, Gastroenterology, Ottignies, Belgium, ²⁴UZ Brussels, Pediatric Gastroenterology, Brussels, Belgium

I. Rodríguez - Lago*¹, O. Merino², Ó. Nantes³, I. Moraleja¹, J.L. Cabriada¹

¹Hospital Galdakao - Usansolo, Gastroenterology Department, Usansolo, Spain, ²Hospital Universitario de Cruces, Gastroenterology Department, Bilbao, Spain, ³Complejo Hospitalario de Navarra, Gastroenterology Department, Pamplona, Spain

N.S. Taylor, S. Cotton, L.-A. McCabe, D.A. Lloyd, J.N. Gordon, Royal Hampshire County Hospital, Hampshire Hospitals NHS Foundation Trust, Department of Gastroenterology, Winchester, United Kingdom

A. Eser¹, C. Primas¹, S. Haunstein², S. Lockton², S. Wang², S. Singh², W. Reinisch¹, ¹Medical University of Vienna, Vienna, Austria, ²Prometheus Labs Inc, San Diego, United States

L. Chan*, E. Wood, L. Fang, J. Limdi

Pennine Acute Hospitals NHS Trust, Gastroenterology, Greater Manchester, United Kingdom

W. Reinisch¹, W.J. Sandborn², B. Feagan³, S. Ghosh⁴, A. Robinson⁵, M. Skup⁵, J. Petersson⁵, B. Huang⁵, A. Lazar⁶, R. Thakkar⁵, ¹McMaster University, Department of Medicine, Hamilton, Canada, ²University of California San Diego, Division of Gastroenterology, La Jolla, United States, ³Robarts Clinical Trials Inc., Robarts Research Institute, Western University, London, Ontario, Canada, ⁴University of Calgary, Department of Medicine, Calgary, Canada, ⁵AbbVie Inc, GPRD, North Chicago, United States, ⁶AbbVie Deutschland GmbH & Co, KG, GPRD, Ludwigshafen, Germany

I. Blumenstein¹, S. Vollmer², W. Klemm³, G. Virgin⁴, S. Weber-Mangal⁴, J. Stein⁵, ¹Frankfurt University Hospital, Medical Dpt. 1, Frankfurt, Germany, ²Gastroenterological Practice, Göppingen, Germany, ³Gastroenterological Practice, Cottbus, Germany, ⁴Vifor Pharma Germany, Munich, Germany, ⁵Crohn Colitis Zentrum Rhein-Main, Frankfurt, Germany

E. Moreno Rincón*¹, F.J. Serrano Ruiz¹, J.M. Benítez Cantero¹, J.M. Vázquez Morón², H. Pallarés Manrique², J.M. Herrera Justiniano³, E. Leo Carnerero³, M.D.R. Gómez García⁴, M.J. Cabello Tapia⁴, M. Castro Fernández⁵, M. Rojas Feria⁵, L. Castro Laria⁶, F. Argüelles Arias⁶, R. Camargo Camero⁷, G. Alcaín Martínez⁷, E. Iglesias Flores¹, V. García Sánchez¹

¹Hospital Universitario Reina Sofía, Gastroenterology Unit, Córdoba, Spain, ²Hospital Juan Ramón Jiménez, Gastroenterology, Huelva, Spain, ³Hospital Universitario Virgen del Rocío, Gastroenterology, Sevilla, Spain, ⁴Hospital Universitario Virgen de las Nieves, Digestive Department, Granada, Spain, ⁵Hospital de Valme, Gastroenterology, Sevilla, Spain, ⁶Hospital Universitario Virgen Macarena, Gastroenterology, Sevilla, Spain, ⁷Hospital Universitario Virgen de la Victoria, Gastroenterology, Malaga, Spain

K. Greveson¹, T. Shepherd², M. Hamilton¹, C. Murray¹, ¹Royal Free Hospital, Gastroenterology, London, United Kingdom, ²Royal Free Hospital, Gastroenterology, London, United Kingdom

M. Tanaka¹, A. Kawakami¹, Y. Iwao², T. Fukushima³, M. Nishigaki¹, M. Suzuki¹, H. Sanada¹, N. Yamamoto-Mitani¹, ¹The University of Tokyo, School of Health Sciences and Nursing, Tokyo, Japan, ²Keio University School of Medicine, Center for Preventive Medicine, Tokyo, Japan, ³Matsushima Clinic, Yokohama, Japan

R. Goel*^{1, 2}, M. Ormond¹, E. Hullah¹, S. Nayee¹, M. Escudier¹, J. Sanderson³

¹Guy's & St Thomas' Hospitals, Oral Medicine, London, United Kingdom, ²Guy's & St Thomas' Hospitals, Gastroenterology, London, United Kingdom, ³Guy's & St Thomas' NHS Foundation Trust, Gastroenterology, London, United Kingdom

V. Ussia, L. Ceccarelli, S. Maltinti, G. Di Fluri, M.G. Mumolo, V. Bolognesi, A. Ricchiuti, M. Bellini, S. Marchi, F. Costa, Pisa University, Gastroenterology, Pisa, Italy