1 Division of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia.
2 Department of Molecular Biology and Immunology, Maratha Mandal's Nathajirao G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, India.
3 Department of Public Health Dentistry at Surendra Dental College and Research Institute, Sriganganagar, India.
4 Conservative Unit, School of Dental Sciences, Universiti Sains Malaysia Health Campus, Kota Bharu, Malaysia.