1. Department of Basic Medical Sciences, College of Medicine, Shaqra University, Shaqra, Saudi Arabia.
2. Ternopil National Medical University, Ternopil, Ukraine
3. Department of Internal Medicine, College of Medicine, Shaqra University, Shaqra, Saudi Arabia
4. Department of Internal Medicine (Neurology), College of Medicine, Shaqra University, Shaqra, Saudi Arabia
5. Department of Basic Medical Sciences, College of Medicine, Shaqra University, Shaqra, Saudi Arabia