1. Al-Shuwaikh Family Practice Center, Ministry of Health, Kuwait
2. Al-Dasma Family Practice Center, Ministry of Health, Kuwait
3. Al-Sager Family Practice Center, Ministry of Health, Kuwait
4. Community Medicine Department, Faculty of Medicine, Alexandria University, Egypt
5. Department of Occupational Medicine, Ministry of Health, Kuwait
6. Department of Medical Statistics, Medical Research Institute, Alexandria University, Egypt
7. Department of Health Information and Medical Records, Ministry of Health,
Kuwait