1. Department of Hepatobiliary and Liver Transplantation, King Abdulaziz Medical City, P.O. Box 22490, Riyadh 11426, Saudi Arabia
2. Department of Pathology and Laboratory Medicine, College of Medicine, King Saud bin Abdulaziz University for Health Sciences and King Abdullah International Research Center, King Abdulaziz Medical City, P.O. Box 22490, Riyadh 11426, Saudi Arabia