1. Department of Psychiatry, University of the Witwatersrand and South African Society of Psychiatrists, Johannesburg 2000, South Africa
2. Department of Psychiatry, University of Pretoria and College of Psychiatrists (Colleges of Medicine of South Africa), Pretoria 0001, South Africa
3. Department of Psychiatry, Stellenbosch University, Cape Town 8000, South Africa
4. Department of Psychiatry, University of the Witwatersrand, Johannesburg 2000, South Africa
5. Department of Psychiatry and Behavioural Sciences, Walter Sisulu University and Nelson Mandela Academic Hospital, Mthatha 5099, South Africa
6. Department of Psychiatry, Stellenbosch University and College of Psychiatrists (Colleges of Medicine of South Africa), Cape Town 8000, South Africa