1. College of Dental Medicine, Qatar University, Doha, Qatar
2. Department of Basic Dental Sciences, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
3. Department of Oral Surgery, Faculty of Dentistry, Suez Canal University, Ismaielia, Egypt
4. Private Sector, Riyadh, Saudi Arabia
5. Department of Preventive Dental Sciences, Dar Al Uloom University, Riyadh, Saudi Arabia
6. Private Sector, Jeddah, Saudi Arabia
7. CRIMEDIM–Research Center in Emergency and Disaster Medicine, Università Del Piemonte Orientale, Novara, Italy