[1] Univ Barcelona, Hosp Clin, Liver Unit, Barcelona, Catalunya, Spain
[2] Inst Invest Biomed August Pi Sunyer IDI BAPS, Barcelona, Spain
[3] Ctr Invest Biomed Red Enfermedades Hepat & Digest, Barcelona, Spain
[4] Inst Reina Sofia Invest Nefrol, Barcelona, Spain
[5] Hosp Clin Barcelona, Gastroenterol Unit, E-08036 Barcelona, Spain