1. University of Cape Town; Department of Psychiatry and Mental Health; Education Centre, Valkenberg Hospital Private Bag X1, Observatory Cape Town South Africa 7925
2. University of California, San Francisco; Department of Epidemiology and Biostatistics; San Francisco California USA
3. Western Cape Government; Health; 1st floor, Norton Rose House Riebeek Street Cape Town Western Cape South Africa 8000
4. University of Cape Town; Health Economics Unit, School of Public Health and Family Medicine; Observatory 7925 Cape Town South Africa
5. Stellenbosch University; Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences; PO Box 19063 Tygerberg Cape Town South Africa 7505
6. South African Medical Research Council; South African Cochrane Centre; PO Box 19070 Tygerberg Cape Town Western Cape South Africa 7505
7. University of Cape Town; Graduate School of Business; Breakwater Campus Portswood Road, Green Point 8001 Cape Town South Africa
8. South African Medical Research Council; Alcohol and Drug Abuse Research Unit; PO Box 19070 Tygerberg South Africa 7505
9. University of Stellenbosch; Department of Psychiatry; Tygerberg 7505 South Africa