1. Joint Program of Family and Community Medicine; Ministry of Health; Jeddah Saudi Arabia
2. Preventive Medicine Department; Public Health Directorate; Ministry of Health; Jeddah Saudi Arabia
3. Research Center; King Faisal Specialist Hospital and Research Center; Jeddah Saudi Arabia
4. Alnaeim Primary Health Care Centre; Ministry of Health; Jeddah Saudi Arabia
5. College of Medicine; King Abdulaziz University; Jeddah Saudi Arabia
6. Department of Family and Community Medicine; College of Medicine; Taibah University; Almadinah Almunawwarah Saudi Arabia
7. Joint Program of Family and Community Medicine; King Abdulaziz Medical City; Jeddah Saudi Arabia