[1] Hosp Univ La Princesa, Inst Invest Sanitaria Princesa IIS IP, Madrid, Spain
[2] Ctr Invest Biomed Red Enfermedades Hepat & Digest, Madrid, Spain
[3] Moscow Clin Sci Ctr, Moscow, Russia
[4] AM DC Rogaska, Rogashka Slatina, Slovenia
[5] Agencia Sanitaria Costa Sol, Marbella, Spain
[6] St Orsola Marcello Malpighi Hosp, Bologna, Italy
[7] Hosp Univ La Princesa, Madrid, Spain
[8] Univ Pais Vasco UPV EHU, Ctr Invest Biomed Red Enfermedades Hepat & Digest, Hosp Donostia, Inst Biodonostia, San Sebastian, Spain
[9] Cent Hosp Ostfold, Fredrikstad, Norway
[10] Univ Latvia, Riga, Latvia
[11] Henry Dunant Hosp, Athens, Greece
[12] Lithuanian Univ Hlth Sci, Kaunas, Lithuania
[13] Natl Med Univ, Kiev, Ukraine
[14] Fdn Policlin Univ A Gemelli, Rome, Italy
[15] Hacettepe Univ, Fac Med, Ankara, Turkey
[16] Univ Leeds, Leeds, W Yorkshire, England
[17] Ferencvaros Policlin, Budapest, Hungary
[18] Univ Porto, Inst Invest & Inovacao Saude, Oporto, Portugal
[19] Univ Porto, Ipatimup Inst Mol Pathol & Immunol, Oporto, Portugal
[20] Tel Aviv Univ, Rabin Med Ctr, Petah Tiqwa, Israel
[21] Med Univ Sofia, Sofia, Bulgaria
[22] Timisoara Hosp, Timisoara, Romania
[23] CHU Charleroi, Charleroi, Belgium
[24] Univ Hosp Merkur Polyclin Nola, Zagreb, Croatia
[25] Med Ctr Postgrad Educ, Warsaw, Poland
[26] Hosp Basel, Basel, Switzerland
[27] Otto von Guericke Univ Hosp, Magdeburg, Germany
[28] Zealand Univ Hosp, Copenhagen, Denmark
[29] Erasmus MC Univ, Rotterdam, Netherlands
[30] Univ Belgrade, Clin Ctr Serbia, Clin Gastroenterol & Hepatol, Belgrade, Serbia
[31] Herttoniemi Hosp, Helsinki, Finland
[32] Hop Pellegrin, Bordeaux, France
[33] Trinity Coll Dublin, Dublin, Ireland