Funding for this research was provided by:
amfAR, The Foundation for AIDS Research (NA)
Received: 1 September 2017
Accepted: 17 January 2019
First Online: 5 March 2019
Ethics approval and consent to participate
: Ethical approval was granted by the Federal Capital Territory Health Research Ethics Committee in Abuja as well as by the IRB of Johns Hopkins Bloomberg School of Public Health. All participants signed a written informed consent form after having received information regarding the study.
: Not applicable.
: The authors declare that they have no competing interests.
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