Received: 16 November 2020
Accepted: 7 July 2021
First Online: 21 July 2021
: This study was reviewed and approved by the Joint CUHAS/BMC Research Ethics and scientific review committee (Reference number CREC/1399/2019). Permission to conduct the study was obtained from STRRH authorities. Written consent was obtained from each participant after explaining the study aims.
: Not applicable.
: The authors declare that they have no competing interests.