Funding for this research was provided by:
Received: 28 January 2021
Accepted: 12 May 2021
First Online: 30 June 2021
: The study was approved by the National Health Research Review Board, Ministry of Health, in Eswatini. The protocol reference number is SHR139/2019. Verbal and written consent was obtained from participants after receiving a full description of the study.
: Not applicable.
: The authors declare that they have no competing interests.