1. Department of Dental Public Health, Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, 41200 Jenjarom, Selangor, Malaysia
2. Department of Oral Pathology and Oral Medicine, Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, 41200 Jenjarom, Selangor, Malaysia
3. Department of Public Health Dentistry, Siddhpur Dental College and Hospital, Siddhpur, Patan, Gujarat, India