[1] Hamad Medical Corporation,Community Medicine Training Program
[2] Community Medicine Training Program- Primary Health Care Corporation, Medical Education
[3] Faculty of Medicine- Cairo University,College of Health Sciences
[4] Public Health Department- Ministry of Public Health, Department of Public Health
[5] Blood Donation Unit- Hamad Medical Corporation,undefined
[6] Qatar University,undefined
[7] Gastroenterology and Hepatology Department- Hamad Medical Corporation,undefined