1. College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
2. King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
3. Ministry of National Guard-Health Affairs, Riyadh, Saudi Arabia
4. College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
5. Department of Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
6. King Saud bin Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia
7. Research Offices Department, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.