1. From the Liver Disease Research Center, Department of Medicine, College of Medicine, King Saud University, Saudi Arabia
2. From the Department of Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
3. From the Department of Medicine, King Fahad Medical City, Riyadh, Saudi Arabia
4. From the Department of Medicine, King Abdullah bin Abdulaziz University Hospital, Riyadh, Saudi Arabia
5. From the College of Medicine, Alfaisal University, Riyadh, Saudi Arabia