Funding for this research was provided by:
South African Medical Research Council (SHIP-NCD-003)
National Research Foundation
Received: 24 January 2017
Accepted: 23 May 2018
First Online: 7 June 2018
Ethics approval and consent to participate
: The study and subject consent forms were approved by the University of Cape Town Health Sciences faculty human ethics research committee (REF 552/2013) and the study carried out in accordance with the approved guidelines and regulations. Written informed consent was obtained from all the participants or their guardians to perform next generation sequencing.
: Written consent to publish findings was obtained from all the participants or their guardians.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.