1. Pediatric Dentistry Department, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
2. Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Alexandria University, Alexandria 21131, Egypt
3. Clinical Sciences Department, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
4. Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
5. Pathology Department, Faculty of Medicine, Alexandria University, Alexandria 21131, Egypt