1. Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
2. Medical Microbiology, Qunfudah Faculty of Medicine, Umm Al-Qura University, AL-Qunfudah, Saudi Arabia
3. Pediatric Department, East Jeddah Hospital, Jeddah, Saudi Arabia
4. Jeddah Health Affairs, Jeddah, Saudi Arabia.