1. Pharmacometric Research Group, Department of Pharmacy Uppsala University Uppsala Sweden
2. Family Center for Research with Ubuntu, Department of Paediatrics and Child Health Stellenbosch University Stellenbosch South Africa
3. Division of Cardiology Stellenbosch University Stellenbosch South Africa
4. Discipline of Pharmaceutical Science University of KwaZulu‐Natal Durban South Africa
5. Department of Nephrology, Inkosi Albert Luthuli Central Hospital, KwaZulu‐Natal, South Africa, Nelson R Mandela School of Medicine University of KwaZulu‐Natal Durban South Africa