Funding for this research was provided by:
Carnegie Corporation of New York (Grant No--B 8606.R02)
DELTAS Africa Initiative (107768/Z/15/Z)
Deutscher Akademischer Austauschdienst (NA)
Received: 3 September 2019
Accepted: 24 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: Ethics approval for the study was obtained from the Institute of Public Health Research Ethics Committee, Obafemi Awolowo University Ile-Ife (IPHOAU/12/1133), and from Ministry of Health Research Ethics Committees of the Lagos State (LSMH2695/11/260/T) and Osun State (OSHREC/PRS/569 T/154). The study was conducted in line with the requirements of the Declaration of Helsinki. Written consent was obtained from all study participants. Parental consent was waived for children below 18 years from all the ethics committees. This was because the study was non-invasive and the children were street kids with associated challenges of locating parents for study approval purposes. The funding agencies were not involved with the design of the study, the collection, analysis, and interpretation of data and in writing the manuscript.
: Not applicable.
: MOF is a Sectional Editor with the BMC Oral Health. All other authors declare that they have no competing interests.