Funding for this research was provided by:
United States Agency for International Development (AID-OAA-A-14-00057)
Received: 7 December 2019
Accepted: 6 June 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the Institutional Review Board of the Johns Hopkins University, Baltimore, USA (IRB No.: 6361) and the National Institute of Health Institutional Bioethics Committee of Mozambique (Ref: 047/CIBS-INS/2015). This study was reviewed by the Centers for Disease Control and Prevention (CDC) and determined to be human subjects research with non-engagement by CDC staff. All participants provided written informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.