1. King Saud University, Riyadh, Saudi Arabia
2. College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
3. College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
4. Neuroscience Center, King Fahad Specialist Hospital, Dammam, Saudi Arabia
5. Liver Transplant Department, King Fahad Specialist Hospital, Dammam, Saudi Arabia