[1] Hosp Univ Vall Hebron, Liver Unit, Barcelona, Spain
[2] Inst Salud Carlos III, Ctr Invest Biomed Red Enfemerdades Hepat & Digest, Madrid, Spain
[3] Hosp Univ Donostia, Liver Unit, Donostia San Sebastian, Spain
[4] Hosp Univ Marques Valdecilla, Serv Aparato Digest, Inst Invest Sanitaria Valdecilla IDIVAL, Santander, Spain
[5] Hosp Clin Barcelona, Liver Unit, Barcelona, Spain
[6] Complejo Hosp Univ Pontevedra, Serv Aparato Digest, Pontevedra, Spain
[7] Hosp Univ Burgos, Serv Aparato Digest, Burgos, Spain
[8] Hosp Univ Torrecardenas, Serv Aparato Digest, Almeria, Spain
[9] Hosp Clin Univ Valladolid, Serv Aparato Digest, Valladolid, Spain
[10] Hosp Univ Dr Peset, Serv Aparato Digest, Valencia, Spain
[11] Hosp Gen Univ Gregorio Maranon, Hepatol & Liver Transplantat Unit, Madrid, Spain