1. Department of Oral Medicine, Faculty of Dentistry, Damascus University, Damascus, Syria.
2. Department of Oral Medicine, Faculty of Dentistry, Syrian Private University, Damascus, Syria.
3. Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia.
4. Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ibb University, Ibb, Yemen.
5. Department of Periodontology, Faculty of Dentistry, Damascus University, Damascus, Syria.