1. MEHEWE Study Group, Obafemi Awolowo University, Ile-Ife 220282, Nigeria
2. Department of Child Dental Health, Obafemi Awolowo University, Ile-Ife 220282, Nigeria
3. Nigeria Institute of Medical Research, Yaba, Lagos 100001, Nigeria
4. Postgraduate Department, University of Sierra Sur, Oaxaco 70805, Mexico
5. Department of Oral Health Sciences, School of Dentistry, University of Washington, Washington, DC 98195, USA
6. Provost’s Group, Regent’s University, London NW1 4NS, UK
7. Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
8. Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
9. Department of Family Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 98105, USA
10. Department of Pediatric Dentistry and Dental Public Health, Faculty of Dentistry, Alexandria University, Alexandria 21544, Egypt