1. Oral & Maxillofacial Radiology, Oral Medicine and Diagnostic Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
2. School of Dentistry, Department of Medicine and Dentistry, University of Alberta, Canada
3. Cosmetic and Dermatologic Surgery, Department of Dermatology and Dermatologic Surgery, Prince Sultan Military Medical City, Riyadh, Saudi Arabia