1. Department of Preventive Dentistry; College of Medicine; University of Lagos; Lagos State Nigeria
2. Department of Child Dental Health; Obafemi Awolowo University; Ile-Ife Osun State Nigeria
3. Department of Child Dental Health; University College Hospital; Ibadan Oyo State Nigeria
4. Department of Preventive Dentistry; University of Benin; Benin City Edo State Nigeria