1. Department of Dermatology, College of Medicine, University of Hail, Hail, Saudi Arabia
2. Department of Pediatric, Maternity and Children Hospital, Hail, Saudi Arabia
3. Medical Intern, College of Medicine, University of Hail, Hail, Saudi Arabia
4. Department of Dermatology, King Abdulaziz Medical City for National Guard, Riyadh, Saudi Arabia