[1] Hosp Santa Creu & Sant Pau, Barcelona, Spain
[2] Hosp Clin Barcelona, Idibaps, Barcelona, Spain
[3] Med Univ Vienna, Dept Med 3, Div Gastroenterol & Hepatol, Vienna, Austria
[4] Hosp Santa Creu & Sant Pau, Madrid, Spain
[5] Hosp La Paz, Madrid, Spain
[6] Univ Autonoma Madrid, Madrid, Spain
[7] Gregorio Maranon Univ Hosp, Madrid, Spain
[8] Hosp Gen Univ Gregorio Maranon, Unidad Enfermedades Infecciosas VIH, Madrid, Spain
[9] Hosp Ramon & Cajal, Madrid, Spain
[10] Marques De Valdecilla Univ Hosp, Santander, Spain
[11] Hosp Clin Barcelona, Barcelona, Spain
[12] Hosp Univ La Paz, Dept Gastroenterol & Hepatol, Madrid, Spain
[13] Puerta Del Hierro Univ Hosp, Madrid, Spain
[14] Univ Complutense Madrid, Fac Med, Madrid, Spain
[15] Ramon y Cajal Inst Hlth Res, Madrid, Spain
[16] Hosp Marques De Valdecillas, Santander, Spain
[17] Austrian Acad Sci, Cemm Res Ctr Mol Med, Vienna, Austria
[18] Med Univ Vienna, Div Gastroenterol & Hepatol, Dept Internal Med 3, Vienna, Austria