A. Bourreille*¹, A. Attar², V. Maunoury³, M. Simon⁴, A. Aubourg⁵, M. Fumery⁶, J.-M. Reimund⁷, C. Reenaers⁸, I. Nion-Larmurier², B. Bonaz⁹, J. Filippi¹⁰, O. Dewit¹¹, X. Dray², J. Moreau¹², R. Altwegg¹³, X. Roblin¹⁴, C. Stefanescu², J.-y. Mary¹⁵

¹CHU Nantes, Institut des Maladies de l’Appareil Digestif, Nantes, France, ²CHU Paris, Gastroenterologie, Paris, France, ³CHU Lille, Gastroenterologie, Lille, France, ⁴CHU, Gastroenterologie, Paris, France, ⁵CHU Tours, Gastroenterologie, Tours, France, ⁶CHU Amiens, Gastroentérologie, Amiens, France, ⁷CHU Caen, Gastroenterologie, Caen, France, ⁸CHU Liège, Gastroenterologie, Liège, Belgium, ⁹CHU Grenoble, Gastroenterologie, Grenoble, France, ¹⁰CHU Nice, Gastroenterologie, Nice, France, ¹¹CHU Bruxelles, Gastroenterologie, Bruxelles, Belgium, ¹²CHU toulouse, Gastroenterologie, Toulouse, France, ¹³CHU Montpellier, Gastroenterologie, Montpellier, France, ¹⁴CHU Saint Etienne, Gastroenterologie, Saint Etienne, France, ¹⁵Inserm, Biostatistique, Paris, France

G. Bodini*¹, S. Arrigo², A. Bizzocchi², E. G. Giannini¹, V. Savarino¹, E. Savarino³, A. Barabino²

¹University of Genoa, Internal Medicine Department, Genoa, Italy, ²G. Gaslini Institute, Paediatric Gastroenterology and Endoscopy, Genoa, Italy, ³University of Padua, Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, Padua, Italy

T. Omori*, B. Iizuka, H. Kashiwagi, T. Hara, T. Kuriyama, A. Ito, M. Yonezawa, K. Tokushige

Tokyo Women’s Medical University, Gastroenterology, Tokyo, Japan

N. Viazis*, L. Varitimiadis, M. Galanopoulos, A. Tsigaridas, M. Chanias, S. Anastasiadis, I. Tziortziotis, C. Pontas, E. Tsoukali, P. Karatzas, D. Karamanolis

Evangelismos Hospital, Gastroenterology Department, Athens, Greece

E. O’Neill*¹, T. Raftery², A. M. Broderick², B. Bourke², S. Hussey²

¹University College Dublin, Dublin 4, Ireland, ²Our Lady’s Children’s Hospital Crumlin, Gastroenterology, Dublin, Ireland

S. Kanis*, A. de Lima, V. van Oorschot, C. van der Woude

Erasmus Medical Centre, Gastroenterology and Hepatology, Rotterdam, Netherlands

M. Barbosa*¹, T. Gonçalves¹, M. J. Moreira¹, J. Cotter^{1, 2, 3}

¹Hospital da Senhora da Oliveira, Gastroenterology, Guimarães, Portugal, ²Instituto de Investigação em Ciências da Vida e da Saúde, Universidade do Minho, Braga, Portugal, ³Laboratório Associado ICVS/3B´s, Braga, Portugal

J. Schembri*, S. Chetcuti, S. Vella, P. Ellul

Mater Dei Hospital, Gastroenterology, Msida, Malta

M. Reynolds¹, N. Alam², M. Raluy², B. Gardstein¹, D. O’Hara³, M. Smyth⁴, J. M. Khalid*⁴

¹Evidera, Lexington, United States, ²Evidera, Hammersmith, United Kingdom, ³Evidera, San Francisco, United States, ⁴Takeda, London, United Kingdom

I. G. Moraru*¹, R. Vadan¹, L. Gheorghe², M. Dumbrava³, G. Becheanu³

¹Third Department of Gastroenterology, Clinical Hospital Fundeni, Bucarest, Gastroenterology, Bucarest, Romania, ²Third Department of Gastroenterology, Clinical Hospital Fundeni, Bucarest, Hepatology, Bucarest, Romania, ³Third Department of Gastroenterology, Clinical Hospital Fundeni, Bucarest, Anatomical Pathology, Bucarest, Romania

E. Ryoo*, K. Lim, H. Tchah

Gachon University, Gil Hospital, Paediatrics, Incheon, South Korea

T. Schuster*, E. Keller, S. Kräuchi, F. Bantleon, J. Weber, M. Schneider

BÜHLMANN Laboratories AG, Schönenbuch, Switzerland

G. Pellino on behalf of EuroSurg Collaborative*

Second University of Naples, Unit of Colorectal Surgery, Naples, Italy

A. Moniuszko*¹, D. Koziel², S. Gluszek², G. Rydzewska^{1, 2}

¹Central Clinical Hospital of the Ministry of Interior, Department of Gastroenterology with Inflammatory Bowel Diseases Subdivision, Warsaw, Poland, ²Faculty of Medicine and Health Science, Jan Kochanowski University, Kielce, Poland

F. Casellas*^{1, 2}, P. Rodríguez², A. Aparici², M. J. Pérez², V. Robles¹, C. Herrera de Guise¹, N. Borruel¹

¹Hospital Universitari Vall d’Hebron, Unitat Atenció Crohn-Colitis, Barcelona, Spain, ²Hospital Universitari Vall d’Hebron, Barcelona, Spain

L. Camacho*¹, R. Camargo¹, S. López², F. Fernández³, V. Amo², R. Olmedo², G. Alcain¹

¹Hospital Virgen de la Victoria, Gastroenterology, Málaga, Spain, ²Hospital Regional, Gastroenterology, Málaga, Spain, ³Hospital Costa del Sol, Gastroenterology, Málaga, Spain

C.-Y. Chao*, C.-F. Duchatellier, E. Seidman

Research Institute of the McGill University Hospital, Gastroenterology, Montreal, Canada

D. Patel*¹, N. Khan²

¹Mercy Catholic Medical Centre, Internal Medicine, Philadelphia, United States, ²University of Pennsylvania, Internal Medicine, Philadelphia, Pennsylvania, United States

K. O. Kim*¹, B. I. Jang¹, S. H. Shon¹, D. E. Jeong¹, C. H. Yang²

¹Yeungnam University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Daegu, South Korea, ²Dongguk University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungju, Korea, Republic of

M. C. Silva¹, B. C. da Silva*^{2, 3}, J. Silva¹, B. Brito¹, I. Silva¹, V. Nóbrega¹, F. Fortes⁴, A. Pimentel⁴, N. Almeida⁴, V. Surlo⁴, J. Mota⁴, G. Santana¹

¹Universidade do Estado da Bahia, Medicine, Salvador, Brazil, ²Federal University of Bahia, Gastroenterology, Salvador, Brazil, ³Hospital da Bahia, Gastroenterology, Salvador, Brazil, ⁴Roberto Santos General Hospital, Gastroenterology, Salvador, Brazil