1. Oral & Maxillofacial Surgery Department, Faculty of Dental Medicine for Boys, Al-Azhar University, Cairo, Egypt
2. Oral & Maxillofacial Surgery Department, Vision Colleges, Jeddah, Saudi Arabia
3. Clinical Pharmacology Department, Faculty of Medicine, Menoufia University, Shibin Al Kawm, Menoufia, Egypt
4. Maxillofacial Surgery Department, Vision Colleges, Jeddah, Saudi Arabia
5. Vision Colleges, Jeddah, Saudi Arabia