1. Department of Medicine, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
2. Department of Medicine, Division of Endocrinology, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
3. Department of Obstetrics & Gynecology, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
4. Department of Medicine, Karl Bremer Hospital, Cape Town, South Africa
5. Department of Family and Emergency Medicine, Stellenbosch University and Khayelitsha Hospital, Cape Town, South Africa