1. Hypertension in Africa Research Team (HART); North-West University; Potchefstroom South Africa
2. Centre for Lifespan and Chronic Illness Research; University of Hertfordshire; Hertfordshire UK
3. HIV Coordinator; North-West University; Potchefstroom South Africa
4. MRC Research Unit for Hypertension and Cardiovascular Disease; North-West University; Potchefstroom South Africa