Received: 25 November 2017
Accepted: 5 June 2018
First Online: 14 June 2018
Ethics approval and consent to participate
: This study was approved by the Human Research Ethics Committee of the Faculty of Health Sciences at the University of Cape Town (HREC 913/2015). Written informed consent was obtained from all participating CHWs, who all received a copy of the study information and their signed consent. No information was withheld from participants.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.