1. Public Health Directorate Ministry of Health Manama Bahrain
2. Eastern Health Cluster Dammam Saudi Arabia
3. Pediatric Department, Salmaniya Medical Complex Arabian Gulf University Manama Bahrain
4. Mansoura University Mansoura Egypt
5. Family Medicine, Epidemiology & Public Health, Disease Control Section, Ministry of Health. Family and Community Medicine, CMMS AGU Manama Bahrain
6. Food and Water Microbiological Analysis, Public Health Directorate Ministry of Health Manama Bahrain
7. Ministry of Health Manama Bahrain
8. Al Malki Hospital Riffa Bahrain
9. Ministry of Agriculture and Municipality Manama Bahrain