Received: 8 July 2019
Accepted: 20 November 2019
First Online: 11 December 2019
Ethics approval and consent to participate
: Permission to conduct the study was granted by the Research Ethics Committee of the Faculty of Health Sciences of the University of Johannesburg (REC-01-185-2016); the Human Research Ethics Committee of the University of the Witwatersrand (M171086); South African National Health Research Ethics Council (DOH-27-0117-5628); and was registered as a clinical trial with the South African National Health Research Database (GP_2017RP57_655) as well as with clinicaltrials.gov (NCT03102216). Written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.