1. Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa;
2. Office of Research and Development, University of Botswana, Gaborone, Botswana;
3. Botswana-Baylor Children’s Clinical Centre of Excellence, Gaborone, Botswana;
4. Deputy Dean’s Office, Faculty of Health Sciences and Groote Schuur Hospital, Cape Town, South Africa;
5. Baylor College of Medicine, Houston, Texas, USA