1. College of Medicine, King Saud University, Riyadh, Saudi Arabia
2. University Family Medicine Center, Department of Family and Community Medicine, College of Medicine, King Saud University Medical City, Riyadh, Kingdom of Saudi Arabia
3. University Diabetes Center, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
4. College of Medicine, Al-Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
5. College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia