1. Ali Sabah Al-Salem Health Center, Ministry of Health , Kuwait
2. Misherf Family Center, Ministry of Health , Kuwait
3. Rumaithiya Specialized Health Center, Ministry of Health , Kuwait
4. Department of Occupational Medicine, Ministry of Health , Kuwait
5. Community Medicine Department, Faculty of Medicine , Alexandria University , Egypt
6. Department of Health Information and Medical Records, Ministry of Health , Kuwait
7. Department of Medical Statistics, Medical Research Institute , Alexandria University , Egypt