Received: 23 November 2018
Accepted: 25 August 2019
First Online: 2 September 2019
Ethics approval and consent to participate
: Permission to conduct this study was obtained from Stellenbosch University (reference number S15/05/116), the Ministry of Health of Botswana (reference number PPME13/18/1 PS V (357)) and the local health authorities of the Serowe/Palapye district. Routine data regularly collected by healthcare providers for clinical care were used in this study. Therefore, informed consent was waived by the ethics committees, as the study used data previously collected for clinical routine care.
: Not applicable.
: The authors declare that they have no competing interests.