1. Department of Basic Medical Science (Microbiology Unit), College of Medicine, University of Bisha, Bisha, Saudi Arabia
2. Department of Pediatrics, College of Medicine, University of Bisha, Bisha, Saudi Arabia
3. Department of Family Medicine, College of Medicine, University of Bisha, Bisha, Saudi Arabia
4. Department of Medical Microbiology, Faculty of Medical Laboratory Sciences, University of Khartoum, Khartoum, Sudan