Affiliation: | 1. Department of Dental Public Health, School of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia;2. Department of Periodontology, School of Dental Medicine, Tufts University, Boston, MA, USA;3. Department of Diagnosis and Health Promotion, School of Dental Medicine, Tufts University, Boston, MA, USA;4. Department of Public Health, School of Dental Medicine, Tufts University, Boston, MA, USA |