1. Department of Family and Community Medicine, University Family Medicine Center, King Saud University Medical City, Riyadh, Saudi Arabia
2. Department of Family Medicine and Polyclinics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
3. Department of Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia
4. Department of Community and Environmental Health, King Abdullah International Medical Research Center, College of Public Health and Health Informatics, King Saud Bin Abdulaziz University for Health Sciences, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia