1. 1Department of Medicine, College of Medicine and Health Sciences, National University, Suhar, Oman.
2. 2Department of Public Health and Epidemiology, College of Medicine and Health Sciences, National University, Suhar, Oman.
3. 3Department of Family Medicine, Head of Non-communicable Diseases, North Al Batinah, Oman.
4. 4Department of Neurosurgery, Khoulah Hospital, Muscat, Oman.
5. 5Department of Medicine, Suhar Hospital, Suhar, Oman