[1] Hosp Univ Vall Hebron, Dept Internal Med, Liver Unit, Barcelona 08035, Spain
[2] Univ Autonoma Barcelona, UAB, Bellaterra, Spain
[3] Inst Salud Carlos III, CIBER Enfermedades Hepat & Digest CIBERRehd, Madrid, Spain
[4] Banc Sang Teixits, Inst Catala Salut, Barcelona, Spain