J. Cadilla¹, R. Ferreiro², V. Ollero³, P. Vega⁴, A. Fernandez⁵, L. Sanromán¹, E. Castro⁶, S. Soto⁴, J.R. Pineda¹, A. Lorenzo², A. Echarri³, V. Hernandez¹, D. Carpio⁷, S. Pereira¹, J. Castro³, M. Barreiro-de Acosta², ¹CHUVI, Spain, ²University Hospital, Gastroenterology, Santiago, Spain, ³Arquitecto Marcide, Ferrol, Spain, ⁴CHOU, Spain, ⁵Povisa, Spain, ⁶Hospital Lucus Augusti, Lugo, Spain, ⁷CHOP, Spain

R. Iacob*¹, R. Vadan¹, I.E. Csiki¹, L. Gheorghe¹, C. Gheorghe¹, C. Cijevschi², A. Trifan², D. Dobru³, M. Tantau⁴, A. Goldis⁵, G. Constantinescu⁶, M. Diculescu¹

¹Fundeni Clinical Institute, Digestive Diseases and Liver Transplantation Center, Bucharest, Romania, ²Gastroenterology and Hepatology Institute , Gastroenterology, Iasi, Romania, ³Municipal Hospital Targu Mures, Gastroenterology, Targu Mures, Romania, ⁴3rd Medical Clinic Cluj-Napoca, Gastroenterology, Cluj-Napoca, Romania, ⁵District Hospital, Gastroenterology, Timisoara, Romania, ⁶Floreasca Emergency Hospital, Gastroenterology, Bucharest, Romania

A. Fernandez^1,2, R. Gonzalez³, V. Prieto¹, J. Fernandez³, J. Martin^3,4, M. San Maximo^3,4, A. Alvarez¹, C. Piñero¹, Y. Jamanca¹, J. Umaña¹, A. Velasco¹, A. Rodriguez¹, ¹Hospital Clínico de Salamanca, Gastroenterology, Salamanca, Spain, ²Salamanca, Gastroenterology, Salamanca, Spain, ³University of Salamanca, Medicine, Salamanca, Spain, ⁴University of Salamanca, Statistics, Salamanca, Spain

N. Khan¹, A. Abbas², A. Khan³, ¹Southeast Louisiana Veterans Health Care System, Gastroenterology, New Orleans, United States, ²Tulane University, Gastroenterology, New Orleans, United States, ³Tulane University, Endocrinology, New Orleans, United States

J. Zeitz*¹, G. Rogler¹, S. Müller-Mottet², L. Biedermann¹, N. Fournier³, P. Frei⁴, V. Pittet³, M. Fried¹, S. Vavricka⁵

¹University Hospital Zurich, Division of Gastroenterology & Hepatology, Zurich, Switzerland, ²University Hospital Zurich, Division of Pulmonology, Zurich, Switzerland, ³University of Lausanne, Institute of Social and Preventive Medicine, Lausanne, Switzerland, ⁴Seespital Horgen, Division of Gastroenterology, Horgen, Switzerland, ⁵Triemli Hospital, Division of Gastroenterology and Hepatology, Zurich, Switzerland

P.M. Linares¹, M.E. Fernández-Contreras¹, M. Chaparro¹, A. Juliá², R. Tortosa², S. Marsal², J.P. Gisbert¹, ¹Hospital Universitario de La Princesa, IP and CIBERehd, Gastroenterology Unit, Madrid, Spain, ²Vall d'Hebron Hospital Research Institute, Rheumatology Research Group, Barcelona, Spain

K. Muller¹, Hungarian Pediatric IBD², M. Papp³, P. Lakatos⁴, G. Veres¹, ¹Semmelweis University, Ist Dept. of Pediatrics, Budapest, Hungary, ²Hungarian Society of Pediatric Gastroenterology, Hungary, ³University of Debrecen, 2nd Dept. of Medicine, Debrecen, Hungary, ⁴Semmelweis University, Ist Dept. of Medicine, Budapest, Hungary

G. Michalopoulos*, S. Vrakas, V. Ntouli, K. Makris, S. Lamprinakos, C. Tzathas

Tzaneio General Hospital, Department of Gastroenterology, Piraeus, Greece

E. Norén^1,2, S. Almer^3,4, J. Söderman¹, ¹Ryhov County Hospital, Division of Medical Diagnostics, Jönköping, Sweden, ²Linköping University, Department of Clinical and Experimental Medicine, Linköping, Sweden, ³Karolinska Institutet, Department of medicine, Stockholm, Sweden, ⁴Karolinska University Hospital, GastroCentrum, Stockholm, Sweden

G. Sanchez-Sindin¹, M. Barreiro-de Acosta², M. Iglesias-Rey², N. García Couceiro³, R. Ferreiro², A. Lorenzo², L. Valdes³, J.E. Dominguez-Munoz², F.J. González-Barcala³, ¹Hospital do Salnes, Emergency Department, Vilagarcia, Spain, ²University Hospital, Gastroenterology, Santiago, Spain, ³University Hospital, Respiratory, Santiago, Spain

R. Hofmann*¹, X. Guillaume²

¹Tillotts Pharma, Medical Affairs, Rheinfelden, Switzerland, ²Kantar Health , Research, Montrouge, France

E. Domènech¹, A. Juliá², M. Chaparro³, V. García-Sánchez⁴, F. Gomollón⁵, J. Panés⁶, M. Mañosa⁷, M. Barreiro-de Acosta⁸, A. Gutiérrez⁹, E. García-Planella¹⁰, P. Nos¹¹, F. Muñoz¹², M. Esteve¹³, J.L. Mendoza¹⁴, M. Vera¹⁵, L. Marquez¹⁶, R. Tortosa², M. López-Lasanta², A. Alonso², J.L. Gelpí^17,18, A. García-Montero¹⁹, J. Bertanpetit²⁰, D. Absher²¹, R. Myers²¹, S. Marsal², J.P. Gisbert³, ¹Hospital Universitari Germans Trias i Pujol and CIBERehd, Gastroenterology Unit, Badalona, Spain, ²Vall d'Hebron Hospital Research Institute, Rheumatology Research Group, Barcelona, Spain, ³Hospital Universitario de La Princesa, IP and CIBERehd, Gastroenterology Unit, Madrid, Spain, ⁴Hospital Universitario Reina Sofía, Gastroenterology Unit, Córdoba, Spain, ⁵Hospital Clínico Universitario and CIBERehd, Gastroenterology Unit, Zaragoza, Spain, ⁶Hospital Clinic de Barcelona, IDIBAPS and CIBERehd, Gastroenterology Unit, Barcelona, Spain, ⁷Hospital Universitari Germans Trias i Pujol and CIBERehd, Gastroenterology Unit, Barcelona, Spain, ⁸Hospital Clínico Universitario, Gastroenterology Unit, Santiago de Compostela, Spain, ⁹Hospital General de Alicante and CIBERehd, Gastroenterology Unit, Alicante, Spain, ¹⁰Hospital de la Santa Creu i Sant Pau, Gastroenterology Unit, Barcelona, Spain, ¹¹Hospital La Fe and CIBERehd, Gastroenterology Unit, Valencia, Spain, ¹²Complejo Hospitalario de León, Gastroenterology Unit, León, Spain, ¹³Hospital Universitari Mutua de Terrasa, Gastroenterology Unit, Barcelona, Spain, ¹⁴Hospital Clínico San Carlos, Gastroenterology Unit, Madrid, Spain, ¹⁵Hospital Universitario Puerta de Hierro, Gastroenterology Unit, Madrid, Spain, ¹⁶IMIM. Hospital del Mar Medical Research Institute. Pompeu Fabra University, Gastroenterology Unit, Barcelona, Spain, ¹⁷National Institute of Bioinformatics, Life Sciences, Barcelona Supercomputing Centre, Barcelona, Spain, ¹⁸University of Barcelona, Biochemistry and Molecular Biology, Barcelona, Spain, ¹⁹University of Salamanca, Banco Nacional de ADN Carlos III, Salamanca, Spain, ²⁰Universitat Pompeu Fabra, Nacional Genotyping Centre (CeGen), Barcelona, Spain, ²¹Hudson Alpha Institute for Biotechnology, Alabama, United States

J. Martínez Cadilla¹, P. Estevez Boullosa¹, D. Carpio², A. Carmona³, R. Fernandez⁴, A. Tardio⁴, S. Pereira¹, M.L. De Castro¹, D. Martínez Ares¹, A. Fernandez Villaverde³, ¹C.H.U.V.I, Gastroenterology, Vigo, Spain, ²C.H. Pontevedra, Gastroenterology, Pontevedra, Spain, ³Hospital POVISA, Gastroenterology, Vigo, Spain, ⁴C.H.U.V.I, Anatomic Pathologic, Vigo, Spain

A. Lange*¹, A. Prenzler¹, O. Bachmann², R. Linder³, S. Neubauer¹, J. Zeilder¹, M.P. Manns², J.-M. Graf von der Schulenburg¹

¹Leibniz University Hanover, Center for Health Economics Research Hannover (CHERH), Hannover, Germany, ²Hannover Medical School, Department of Gastroenterology, Hepatology, and Endocrinology, Hannover, Germany, ³Scientific Institute of TK for Benefit and Efficiency in Health Care (WINEG), Scientific Institute of TK for Benefit and Efficiency in Health Care (WINEG), Hamburg, Germany

E. Vazeille¹, M.L. Balmer², B. Chassaing¹, S. Stefan Müller², T. Thomas Schaffer², E. Slack³, S. Pfister⁴, M.B. Geuking⁵, D. Lottaz², A.J. Macpherson², S. Hapfelmeier³, K.D. McCoy², A. Darfeuille-Michaud¹, E. Vazeille¹, ¹M2iSH UMR 1071 Inserm/Université d'Auvergne USC INRA 2018, Centre Biomédical de Recherche et Valorisation, Clermont-Ferrand, France, ²University Bern, Maurice E Müller Laboratories, Universitätsklinik für Viszerale Chirurgie und Medizin, Inselspital, Bern, Switzerland, ³Institute of Microbiology, D-BIOL, ETH Zürich, Zürich, Switzerland, ⁴University Bern, Institute for Infectious Diseases, Bern, Switzerland, ⁵University of Bern, Department Klinische Forschung, Bern, Switzerland

T. Slongo¹, R. Marcello¹, F. Ferrara¹, G. Battistella², H. Heras Salvat¹, G. Guarnieri¹, N. Dal Bò¹, S. Loperfido¹, A. Caroli¹, A. Schiavinato¹, A. Furlanetto³, A.P. Dei Tos³, F. Di Mario¹, ¹Gastroenterology Unit, Treviso General Hospital, Department of Internal Medicine, Treviso, Italy, ²Treviso General Hospital, Department of Clinical Epidemiology, Treviso, Italy, ³Pathology Unit, Treviso General Hospital, Department of Clinical Pathology, Treviso, Italy

J. Schembri*, N. Azzopardi, P. Ellul

Mater Dei Hospital, Department of Gastroenterology, Tal Qroqq, Malta

N. Rossen¹, A. Bart², N. Verhaar², E. van Nood³, R. Kootte⁴, P. de Groot³, M. Nieuwdorp⁴, G. D'Haens¹, C. Ponsioen¹, T. van Gool², ¹Academic Medical Center, Gastroenterology & Hepatology, Amsterdam, Netherlands, ²Academic Medical Center Amsterdam, Department of Medical Microbiology, Parasitology Section, Amsterdam, Netherlands, ³Academic Medical Center Amsterdam, Department of Internal Medicine, Amsterdam, Netherlands, ⁴Academic Medical Center Amsterdam, Department of Vascular Medicine, Amsterdam, Netherlands

O. Palmieri¹, F. Bossa¹, M.T. Creanza², T. Latiano¹, G. Corritore¹, D. Scimeca¹, G. Biscaglia¹, V.C. Liuzzi², R. Anglani², M. Carella³, V. Annese⁴, A. Andriulli¹, A. Latiano¹, ¹IRCCS ‘Casa Sollievo della Sofferenza’ Hospital, Division of Gastroenterology, San Giovanni Rotondo, Italy, ²CNR, Istituto di Studi sui Sistemi Intelligenti per l'Automazione, Bari, Italy, ³IRCCS ‘Casa Sollievo della Sofferenza’ Hospital, Division of Medical Genetics, San Giovanni Rotondo, Italy, ⁴AOU Careggi, SOD2, Division of Gastroenterolgy, Firenze, Italy

H.M. Kim*¹, H.-S. Kim¹, J.H. Kim¹, H.S. Kim¹, K.J. Lee¹, H.J. Park¹, J.W. Kim¹, J.S. Kim², Y.S. Kim³, J.H. Cheon⁴, B.D. Ye⁵, Y.H. Kim⁶, D.S. Han⁷

¹Yonsei University Wonju College of Medicine, Division of Gastroenterology and Hepatology, Wonju, South Korea, ²Seoul National Uinversity College of Medicine, Internal Medicine and Liver Research Institute, Seoul, Korea, Republic of, ³Inje University College of Medicine, Internal Medicine, Seoul, Korea, Republic of, ⁴Yonsei University College of Medicine, Internal Medicine and Institute of Gastroenterology, Seoul, Korea, Republic of, ⁵University of Ulsan College of Medicine, Asan Medical Center, Gastroenterology and Inflammatory Bowel Disease Center, Seoul, Korea, Republic of, ⁶Sungkyunkwan University School of Medicine, Department of Internal Medicine, Seoul, Korea, Republic of, ⁷Hanyang University Guri Hospital, Department of Internal Medicine, Guri, Korea, Republic of