1. King Saud bin Abdulaziz University for Health and Sciences
2. Pathology and Laboratory Medicine, Molecular Pathology and Genetics, King Abdulaziz Medical City
3. Medical, Biotechnology, King Abdulaziz Medical City
4. Medicine Department, Riyadh Military Hospital
5. Department of Medicine, King Faisal Specialist Hospital and Research Centre
6. Gastroenterology and Hepatology Department, Riyadh Military Hospital
7. Gastroentorogy and Hepatology, King Saud University College of Medicine
8. Hepatobiliary Sciences and Liver Transplant, King Abdelaziz Medical City