Institutional Review Board Statement
MAY
This study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving research study participants were approved by the Malawi College of Medicine research ethics committee reference P.04/15/1719 7 August 2015 the Medical Research Council of Zimbabwe reference MRCZ/A/1946 24 May 2016, the Biomedical Research and Training Institute institutional review board in Zimbabwe, the London School of Hygiene and Tropical Medicine ethics committee reference 8818 on the 3 June 2015, the University of Cape Town research ethics committee reference 754/2015 on the 30 June 2016, the Harare Central Hospital Ethics Committee on the 5