[1] Univ Hosp Geneva, Dept Gastroenterol & Hepatol, Geneva, Switzerland
[2] Swiss Red Cross, Blood Transfus Serv, Lugano, Switzerland
[3] Univ Zurich Hosp, Dept Clin Pharmacol, CH-8091 Zurich, Switzerland
[4] Univ Lausanne Hosp, Dept Gastroenterol & Hepatol, Lausanne, Switzerland
[5] Clin Luganeses Moncucco, Hepatol Unit, Lugano, Switzerland
[6] Univ Hosp Geneva, Transplantat Unit, Geneva, Switzerland