[1] Univ Barcelona, Barcelona Inst Global Hlth ISGlobal, Hosp Clin, Calle Rossellon 171, ES-08036 Barcelona, Spain
[2] Univ Barcelona, Fac Med, Barcelona, Spain
[3] Sheikh Shakhbout Med City, Dept Gastroenterol & Hepatol, Abu Dhabi, U Arab Emirates
[4] King Abdul Aziz Med City, Dept Med, Gastroenterol Unit, Jeddah, Saudi Arabia
[5] King Fahad Gen Hosp, Dept Med, Gastroenterol Unit, Jeddah, Saudi Arabia
[6] Amer Univ Beirut, Med Ctr, Dept Internal Med, Div Gastroenterol, Beirut, Lebanon
[7] Mubarak Al Kabier Hosp, Dept Gastroenterol & Hepatol, Jabriya, Kuwait
[8] King Faisal Specialist Hosp & Res Ctr, Liver Transplant Ctr, Riyadh, Saudi Arabia
[9] Johns Hopkins Univ, Div Gastroenterol & Hepatol, Baltimore, MD USA