1. Division of Intellectual Disability, Department of Psychiatry and Mental Health, University of Cape Town, South Africa
2. Private Practice, South Africa
3. King Dinuzulu Hospital Complex, South Africa
4. Department of Psychiatry, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, South Africa
5. Fort Napier Hospital, South Africa
6. Department of Behavioural Medicine, Nelson R Mandela School of Medicine, South Africa
7. University of KwaZulu-Natal, South Africa