1. Family & Community Medicine Department, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
2. Department of Medicine, Oncology Division, College of Medicine, King Saud University, Riyadh, Saudi Arabia
3. General Surgery Department, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
4. College of Medicine, King Saud University, Riyadh 29391, Saudi Arabia
5. Epidemiology & Biostatistics Department, College of Public Health & Health Informatics, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
6. Aga Khan University Hospital, Karachi, Pakistan
7. Ministry of Health and Prevention, Dubai, UAE
8. Department of Epidemiology, School of Health Sciences, University of Tampere, Tampere, Finland
9. College of Public Health & Health Informatics, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
10. King Abdullah International Medical Research Center (KAIMRC), Riyadh, Saudi Arabia