[1] Univ Autonoma Barcelona, Dept Internal Med, Liver Unit, E-08193 Barcelona, Spain
[2] Univ Autonoma Barcelona, Dept Gastrointestinal Endoscopy, E-08193 Barcelona, Spain
[3] Univ Autonoma Barcelona, Inst Recerca VHIR, Hosp Univ Vall dHebron, Dept Gastroenterol, E-08193 Barcelona, Spain
[4] Inst Salud Carlos III, Ctr Invest Biomed Red Enfermedades Hepat & Digest, Madrid, Spain