1. Department of Internal Medicine; Hospital Universitari Germans Trias i Pujol; Universitat Autònoma de Barcelona; Badalona Spain
2. Section of General Internal Medicine; Boston Medical Center; Boston University School of Medicine; Boston MA USA
3. Department of Internal Medicine; Hospital Universitari de Bellvitge; Universitat de Barcelona; L'Hospitalet de Llobregat Spain
4. Liver Unit; Department of Gastroenterology; Hospital Universitari Germans Trias i Pujol, Fundació Institut d'Investigació Germans Trias i Pujol; Universitat Autònoma de Barcelona; Badalona Spain
5. Municipal Centre for Substance Abuse Treatment (Centro Delta); IMSP Badalona; Badalona Spain