1. Department of Community Health and Primary Care, College of Medicine, University of Lagos, Idi-Araba, Lagos State, Nigeria;
2. Department of Preventive Medicine and Public Health, and Department of Family Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA;
3. Department of Preventive Dentistry, College of Medicine, University of Nigeria, Enugu Campus, Nigeria;
4. Department of Community Medicine, University of Abuja Teaching Hospital, Gwagwalada, Federal Capital Territory, Nigeria;
5. Breast Without Spot, Lagos, Nigeria;
6. Mayo Clinic, Scottsdale, Arizona, USA;
7. Sefako Makgatho Health Sciences University, Pretoria, South Africa