South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, South African Medical Research Council - Biostatistics Unit, South African Medical Research Council - Biostatistics Unit, South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, University of California, San Francisco (UCSF) - Department of Medicine, University of Toronto - Centre for Addiction and Mental Health (CAMH), University of Cape Town (UCT) - Alan J Flisher Centre for Public Mental Health and South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit

Syracuse University, Syracuse University, Syracuse University, University of California, San Francisco (UCSF) - Department of Medicine, University of Rochester, Medical University of South Carolina, Syracuse University, State University of New York (SUNY) - State University of New York (SUNY) at Oswego and Syracuse University