Funding for this research was provided by:
United States Agency for International Development (AID-OAA-A-13-00087)
Received: 3 July 2019
Accepted: 23 September 2019
First Online: 24 October 2019
Ethics approval and consent to participate
: The research protocol received ethical approval from the Population Council’s Institutional Review Board, Nigeria’s National Health Research Ethic Committee, and ethic committees based at state ministries of health in Bauchi, Cross River, Ebonyi and Kaduna. Written informed consent was received before the beginning of the training and pre-test interview, and before the start of the 9-month interview.
: Not applicable.
: The authors declare that they have no competing interests.