1. Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31411, P.O. Box 1982, Saudi Arabia
2. Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31411, P.O. Box 1982, Saudi Arabia
3. Department of Pediatric Dentistry and Dental Public Health, Faculty of Dentistry, Alexandria University, Alexandria 21527, Egypt
4. College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31411, P.O. Box 1982, Saudi Arabia
5. Department of Periodontology and Oral Medicine, Institute of Dentistry, Banja Luka 78000, Bosnia and Herzegovina
6. Department of Periodontology and Oral Medicine, Medical Faculty University of Banja Luka, Banja Luka 78000, Bosnia and Herzegovina