1. Oral Health and Society Research Unit, Faculty of Dentistry, McGill University, Montreal, QC, Canada
2. Preventive Dentistry, Faculty of Dentistry, Umm Al-Qura University, Makkah, SA
3. Department of Preventive Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, SA
4. Department of Family Medicine, McGill University, Montreal, QC, Canada