S. Gatti*, R. Annibali, P. Coccia, P. Pierani, C. Catassi

Università Politecnica delle Marche, Department of Pediatrics, Ancona, Italy

E. Altintas¹, S. Yaras¹, F. Ates¹, B. Saritas¹, M.K. Aydin¹, O. Sezgin¹, G. Orekici Temel², E. Üçbilek¹, T. Kara³, R. Arpaci³, ¹Mersin University Faculty Of Medicine, Gastroenterology Departments, Mersin, Turkey, ²Mersin University Faculty of Medicine, Biostatistic Department, Mersin, Turkey, ³Mersin University Faculty of Medicine, Pathology Department, Mersin, Turkey

J. Burisch¹, R. Seerup¹, S. Cukovic-Cavka², I. Kaimakliotis³, D. Duricova⁴, O. Shonova⁵, I. Vind⁶, N. Pedersen¹, E. Langholz⁷, N. Thorsgaard⁸, V. Andersen⁹, J.F. Dahlerup¹⁰, R. Salupere¹¹, K.R. Nielsen¹², P. Manninen¹³, E. Tsianos¹⁴, K. Ladefoged¹⁵, E. Björnsson¹⁶, Y. Bailey¹⁷, S. Odes¹⁸, M. Martinato¹⁹, L. Kupcinskas²⁰, S. Turcan²¹, F. Magro²², A. Goldis²³, E. Belousova²⁴, V. Hernandez²⁵, S. Almer²⁶, J. Halfvarson²⁷, N. Arebi²⁸, S. Sebastian²⁹, P. Lakatos³⁰, P. Munkholm¹, ¹Herlev University Hospital, Department of Gastroenterology, Copenhagen, Denmark, ²University Hospital Rebro, Division of Gastroenterology and Hepatology, Zagreb, Croatia, ³Nicosia private practice, Nicosia, Cyprus, ⁴Charles University, IBD Center ISCARE, Prague, Czech Republic, ⁵Hospital Ceske Budejovice, Gastroenterology Department, Ceske Budejovice, Czech Republic, ⁶Amager Hospital, Department of Medicine, Amager, Denmark, ⁷Gentofte Hospital, Department of Medical Gastroenterology, Gentofte, Denmark, ⁸Herning Central Hospital, Department of Medicine, Herning, Denmark, ⁹Viborg Regional Hospital, Medical department, Viborg, Denmark, ¹⁰Arhus University Hospital, Department of Medicine V (Hepatology and Gastroenterology), Aarhus, Denmark, ¹¹Tartu University Hospital, Division of Endocrinology and Gastroenterology, Tartu, Estonia, ¹²The National Hospital of the Faroe Islands, Medical department, Torshavn, Faroe Islands, ¹³Tampere University Hospital, Department of Gastroenterology and Alimentary Tract Surgery, Tampere, Finland, ¹⁴University Hospital, 1st Division of Internal Medicine and Hepato-Gastroenterology Unit, Ioannina, Greece, ¹⁵Dronning Ingrids Hospital, Medical department, Nuuk, Greenland, ¹⁶The National University Hospital, Department of Internal Medicine, Section of Gastroenterology and Hepatology, Reykjavik, Iceland, ¹⁷Adelaide and Meath Hospital, TCD, Department of Gastroenterology, Dublin, Ireland, ¹⁸Soroka Medical Center and Ben Gurion University of the Negev, Department of Gastroenterology and Hepatology, Beer Sheva, Israel, ¹⁹On behalf of the EpiCom Northern Italy center based in Crema, Cremona, Firenze, Forlì, Padova and Reggio Emilia, Italy, ²⁰Lithuanian University of Health Sciences, Institute for Digestive Research, Kaunas, Lithuania, ²¹State University of Medicine and Pharmacy, Laboratory of Gastroenterology, Medical Clinic IY, Chisinau, Moldova, Republic of, ²²Hospital de São João, Department of Gastroenterology, Porto, Portugal, ²³University of Medicine ‘Victor Babes’, Clinic of Gastroenterology, Timisoara, Romania, ²⁴Moscow Regional Research Clinical Institute, Department of Gastroenterology, Moscow, Russian Federation, ²⁵Complexo Hospitalario Universitario de Vigo, Gastroenterology Department, Vigo, Spain, ²⁶Department of Clinical and Experimental Medicine, Linköping University, Division of Gastroenterology and Hepatology, Linköping, Sweden, ²⁷Örebro University Hospital and School of Health and Medical Sciences, Örebro University, Department of Medicine, Division of Gastroenterology, Örebro, Sweden, ²⁸St. Mark's Hospital, Imperial College London, London, United Kingdom, ²⁹Hull and East Yorkshire NHS Trust & Hull and York Medical School, Hull Royal Infirmary, Hull, United Kingdom, ³⁰Semmelweis University, 1st Department of Medicine, Budapest, Hungary

A.V. Patai*¹, C. Csóka¹, Á.A. Csontos¹, T. Micsik², M. Juhász¹, K. Müllner¹, E. Mihály¹, L. Herszényi¹, Z. Tulassay¹, P. Miheller¹

¹Semmelweis University, 2nd Department of Medicine, Budapest, Hungary, ²Semmelweis University, 1st Department of Pathology and Experimental Cancer Research, Budapest, Hungary

O. Terjek¹, A.A. Csontos¹, K. Lorinczy¹, A. Bors², A. Torday², P.L. Lakatos³, P. Miheller¹, ¹Semmelweis University, 2nd Department of Medicine, Budapest, Hungary, ²Hungarian National Blood Transfusion Service, Department of Molecular Diagnostics, Budapest, Hungary, ³Semmelweis University, 1st Department of Medicine, Budapest, Hungary

J.Y. Lee¹, B.D. Ye¹, S.-K. Yang¹, J.W. Kim¹, S.H. Park¹, S.-K. Park¹, D.-H. Yang¹, K.W. Jung¹, K.-J. Kim¹, J.-S. Byeon¹, S.-J. Myung¹, J.-H. Kim¹, ¹University of Ulsan College of Medicine, Asan Medical Center, Department of Gastroenterology and Inflammatory Bowel Disease Center, Seoul, South Korea

Z. Vegh*¹, B. Lovasz¹, P.A. Golovics¹, K. Gecse¹, E. Macsai², I. Szita², M. Balogh³, L. Lakatos², P. Lakatos¹

¹Semmelweis University, 1st Department of Medicine, Budapest, Hungary, ²Csolnoky F. Province Hospital, Department of Medicine, Veszprem, Hungary, ³Grof Eszterhazy Hospital, Department of Medicine, Papa, Hungary

C. Taxonera¹, I. Fernández-Blanco², M. Barreiro-de Acosta³, G. Bastida⁴, A. López-San Román⁵, O. Merino⁶, V. García-Sánchez⁷, J.P. Gisbert⁸, I. Marín-Jiménez⁹, P. López-Serrano¹⁰, E. Iglesias⁷, J. Martínez-González⁵, M. Chaparro⁸, F. Bermejo¹¹, C. Saro¹², L. Pérez-Carazo⁹, R. Plaza¹³, D. Olivares¹, M. Cañas¹, J.L. Mendoza¹, ¹H Clinico San Carlos, IBD Unit, IdiSSC, Madrid, Spain, ²Hospital Moncloa, Madrid, Spain, ³H Clínico de Santiago, Santiago de Compostela, Spain, ⁴H La Fe, Valencia, Spain, ⁵H Ramón y Cajal, Madrid, Spain, ⁶H Cruces, Barakaldo, Spain, ⁷H Reina Sofía, Córdoba, Spain, ⁸H La Princesa, CIBERehd, Madrid, Spain, ⁹H Gregorio Marañón, Madrid, Spain, ¹⁰H Alcorcón, Madrid, Spain, ¹¹H Fuenlabrada, Madrid, Spain, ¹²H de Cabueñes, Gijón, Spain, ¹³H Infanta Leonor, Madrid, Spain

M. Araki*¹, S. Shinzaki¹, H. Iijima¹, S. Hiyama¹, T. Yamada², S. Arimitsu³, M. Komori⁴, M. Ito⁵, A. Mukai⁶, S. Nakajima⁷, F. Terabe⁸, K. Kinoshita⁹, S. Kitamura¹⁰, Y. Murayama¹¹, H. Ogawa¹², Y. Yasunaga¹³, M. Oshita¹⁴, E. Masuda¹⁵, M. Tsujii¹, T. Takehara¹

¹Osaka University Graduate School of Medicine, Department of Gastroenterology and Hepatology, 2-2 Yamadaoka, Suita, Japan, ²Osaka Medical Center, National Hospital Organization, Department of Gastroenterology, 2-1-14, Hoenzaka, Chuo-ku, Osaka, Japan, ³Kinshukai , Infusion Clinic, Osaka, Japan, ⁴Osaka Rosai Hospital, Department of Gastroenterology, 1179-3, Nagasone-cho, Kita-ku, Sakai, Osaka, Japan, ⁵NTT-west Hospital, Department of Gastroenterology, 2-6-40, Karasugatsuji, Tennoji-ku, Osaka, Japan, ⁶Sumitomo Hospital, Department of Gastroenterology, 5-3-20, Nakanoshima, Kita-ku, Osaka, Japan, ⁷Toyonaka Municipal Hospital, Department of Gastroenterology, 4-14-1, Shibahara-cho, Toyonaka, Osaka, Japan, ⁸Yao Municipal Hospital, Department of Gastroenterology, 1-3-1, Ryukacho, Yao, Osaka, Japan, ⁹Otemae Hospital, Department of Gastroenterology, 1-5-34, Otemae, Chuo-ku, Osaka, Japan, ¹⁰Sakai City Hospital, Department of Gastroenterology, 1-1-1, Minamiyasui-cho, Sakai-ku, Sakai, Osaka, Japan, ¹¹Itami City Hospital, Department of Gastroenterology, 1-100, Koyaike, Itami, Hyogo, Japan, ¹²Nishinomiya Municipal Central Hospital, Department of Gastroenterology, 8-24, Hayashida-cho, Nishinomiya, Hyogo, Japan, ¹³Hyogo Prefectural Nishinomiya Hospital, Department of Gastroenterology, 13-9, Rokutanji-cho, Nishinomiya, Hyogo, Japan, ¹⁴Osaka Police Hospital, Department of Gastroenterology, 10-31, Kitayama-cho, Tennoji-ku, Osaka, Japan, ¹⁵Osaka Minami Medical Center, National Hospital Organization, Department of Gastroenterology, 2-1, Kidohigashimachi, Kawachinagano, Osaka, Japan

M. Chaparro¹, A. González-Neira², M. Román³, G. Pita², T. Cabaleiro⁴, D. Herrero², B. Herráez², R. Alonso², C. Taxonera⁵, P. López-Serrano⁶, P. Martínez-Montiel⁷, I. Vera⁸, F. Bermejo⁹, A. López-San Román¹⁰, F. Abad-Santos⁴, J.P. Gisbert¹, ¹Hospital Universitario de La Princesa, IP and CIBERehd, Gastroenterology Unit, Madrid, Spain, ²Spanish Narional Cancer Research Institute, Madrid, Spain, ³Hospital Universitario de La Princesa and IP, Farmacy Unit, Madrid, Spain, ⁴Hospital Universitario de La Princesa and IP, Clinical Pharmacology Unit, Madrid, Spain, ⁵Hospital Clínico San Carlos, Gastroenterology Unit, Madrid, Spain, ⁶Hospital de Alcorcón, Gastroenterology Unit, Madrid, Spain, ⁷Hospital Doce de Octubre, Gastroenterology Unit, Madrid, Spain, ⁸Hospital Puerta de Hierro, Gastroenterology Unit, Madrid, Spain, ⁹Hospital de Fuenlabrada, Gastroenterology Unit, Madrid, Spain, ¹⁰Hospital Ramón y Cajal, Gastroenterology Unit, Madrid, Spain

R.D. Bojesen¹, L.B. Riis², O.H. Nielsen³, T. Jess¹, ¹Statens Serum Institut, Department of Epidemiology Research, Copenhagen, Denmark, ²Herlev Hospital, University of Copenhagen, Department of Pathology, Herlev, Denmark, ³Herlev Hospital, University of Copenhagen, Department of Gastroenterology, Medical Section, Herlev, Denmark

H.P. Gröchenig*¹, C. Dejaco², L. Dzirlo³, G. Eckhard⁴, T. Feichtenschlager⁵, H. Fuchssteiner⁶, J. Gartner⁷, T. Haas⁸, A. Kirchgatterer⁹, R. Koch¹⁰, O. Ludwiczek¹¹, A. Mayer¹², W. Miehsler¹³, P. Papay¹⁴, P.-G. Peters¹⁵, R. Platzer¹⁶, G. Reicht¹⁷, P. Steiner¹⁸, J. Stimakovits¹⁹, T. Waldhör²⁰, H. Wenzl²¹, G. Novacek²

¹Akademisches Lehrkrankenhaus Barmherzige Brüder, Abteilung für Innere Medizin, St. Veit an der Glan, Austria, ²Medizinische Universität Wien, Universitätsklinik für Innere Medizin III, Vienna, Austria, ³Krankenhaus Barmherzige Schwestern, III. Medizinische Abteilung, Wien, Austria, ⁴Landeskrankenhaus Oberpullendorf, Interne Abteilung, Oberpullendorf, Austria, ⁵Krankenhaus Rudolfstiftung Wien, IV Medizinische Abteilung, Wien, Austria, ⁶KH Elisabethinen Linz, Innere Medizin IV, Linz, Austria, ⁷Hanusch Krankenhaus, Innere Medizin, Wien, Austria, ⁸Darmpraxis Salzburg, Ordination, Salzburg, Austria, ⁹Klinikum Wels-Grieskirchen, Abteilung für Innere Medizin V, Grieskirchen, Austria, ¹⁰Medizinische Universität Innsbruck, Innere Medizin I, Innsbruck, Austria, ¹¹Landeskrankenhaus Hall in Tirol, Innere Medizin, Hall in Tirol, Austria, ¹²Universitätsklinikum St. Pölten, 2. Medizinische Abteilung, St. Pölten, Austria, ¹³Krankenhaus Barmherzige Brüder , Innere Medizin, Salzburg, Austria, ¹⁴Hartmannspital Wien, Innere Medizin, Wien, Austria, ¹⁵Landeskrankenhaus Feldkirch, Abteilung für Innere Medizin, Feldkirch, Austria, ¹⁶Landeskrankenhaus Wiener Neustadt, Abteilung für Innere Medizin I, Wiener Neustadt, Austria, ¹⁷Krankenhaus Barmherzige Brüder Graz, Abteilung für Innere Medizin, Graz, Austria, ¹⁸Klinikum Wels-Grieskirchen, Abteilung für Innere Medizin I, Wels, Austria, ¹⁹Krankenhaus Barmherzige Brüder Eisenstadt, Innere Medizin, Eisenstadt, Austria, ²⁰Medizinische Universität Wien, Abteilung für Epidemiologie, Wien, Austria, ²¹Medizinische Universität Graz, Abteilung für Gastroenterologie & Hepatologie, Graz, Austria

E. McDermott¹, C. Rowan¹, T. Murphy¹, K. Byrne¹, G. Doherty¹, G. Cullen¹, H. Mulcahy¹, E. Ryan¹, ¹St. Vincent's University Hospital, Department of Gastroenterology, Dublin, Ireland

V. Kariyawasam¹, T. Huang², P. Lunney², K. Middleton², R. Wang², C. Selinger², P. Katelaris², J. Andrews³, R. Leong², ¹Guy's and St Thomas' NHS Foundation Trust, Gastroenterology, Londond, United Kingdom, ²Concord Repatriation General Hospital, Gastroenterology, Concord, Australia, ³Royal Adelaide Hospital, Dept of Gastroenterology & Hepatology, Adelaide, Australia

M. Syed, A. Algaba*, I. Guerra, M. de Lucas, D. Bonillo, M. Hernández, A. Granja, F. Berrmejo

Hospital Universitario de Fuenlabrada, Gastroenterology, Madrid, Spain

J.M. Benitez¹, J.M. Mahachie John², E. Théâtre³, C. Reenaers³, M. De Vos⁴, O. Dewit⁵, K. Van Steen², E. Louis³, ¹Reina Sofia University Hospital, IMIBIC, CHU Liège, Gastroenterology, Córdoba, Spain, ²CHU de Liège, Bioinformatics and Modeling, Liège, Belgium, ³CHU de Liège, GIGA, Gastroenterology, Liège, Belgium, ⁴Ghent University Hospital, Gastroenterology, Ghent, Belgium, ⁵Saint-Luc Hospital, Gastroenterology, Brussels, Belgium

A. de Lima¹, Z. Zelinkova¹, C. van der Ent¹, C.J. van der Woude¹, ¹Erasmus Medical Center, Gastroenterology and Hepatology, Rotterdam, Netherlands

T. Ishige*¹, T. Tomomasa¹, R. Hatori¹, M. Tatsuki¹, Y. Igarashi¹, K. Arai², H. Arakawa¹

¹Gunma University, Department of Pediatrics, Maebashi, Japan, ²National Center for Child Health and Development, Division of Gastroenterology, Tokyo, Japan

R. Goel¹, S. Nayee², M. Escudier², A. Mentzer³, H. Campbell², UK IBD consortium⁴, J. Satsangi⁵, J. Mansfield⁶, C. Mathew⁷, N. Prescott⁷, J. Sanderson¹, ¹Guy's & St Thomas' NHS Foundation Trust, Gastroenterology, London, United Kingdom, ²Guy's & St Thomas' Hospitals, Medicine, London, United Kingdom, ³University of Oxford, Wellcome Trust Centre for Human Genetics, Oxford, United Kingdom, ⁴UK IBD consortium, London, United Kingdom, ⁵Western General Hospital, Gastrointestinal Unit, Edinburgh, United Kingdom, ⁶Newcastle Upon Tyne Hospitals NHS Foundation Trust, Gastroenterology, Newcastle Upon Tyne, United Kingdom, ⁷King's College London, Genetics, London, United Kingdom

E. Calabrese¹, V. Annese², G.C. Sturniolo³, G. Venturelli⁴, L. Neri⁵, F. Pallone¹, ¹University of Rome Tor Vergata, GI Unit, Medicine, Rome, Italy, ²AOU Careggi, Italy, ³Università di Padova, Italy, ⁴Doxafarma, Italy, ⁵University of Milan, Italy