Funding for this research was provided by:
Bill and Melinda Gates Foundation
Article History
Received: 3 July 2018
Accepted: 21 June 2019
First Online: 18 July 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Niger Ministry of Health ethical review board. Informed consent was collected from all participants. For adolescents under the age of 18, we obtained informed consent from a parent/guardian as well as informed assent from the adolescent.
: Not applicable.
: The authors declare that they have no competing interests.