[1] South African Med Res Council, Alcohol Tobacco & Other Drug Res Unit, Cape Town, South Africa
[2] Stellenbosch Univ, Inst Life Course Hlth Res, Dept Global Hlth, Stellenbosch, South Africa
[3] Stellenbosch Univ, SAMRC Unit Risk & Resilience Mental Disorders, Stellenbosch, South Africa
[4] Univ Cape Town, Dept Psychiat & Mental Hlth, Cape Town, South Africa