Funding for this research was provided by:
South African Medical Research Foundation
Received: 25 March 2020
Accepted: 15 July 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: All experiments were approved by the Ethics Approval Committee of the Faculty of Health Sciences at the University of Pretoria (EC 160630–051). Participants approved and provided informed consent prior to enrolment in this study. Participant provided written consent. All experimental methods and experiments were in accordance with the Helsinki Declaration.
: All participants provided consent for publication of study results of the collected biomaterials paired with anonymized information on age, sex, location, diet and other data.
: The authors declare that they have no competing interests.