1. School of Medicine and Public Health; University of Newcastle; New South Wales
2. Hunter New England Population Health; Hunter New England Local Health District; New South Wales
3. National Drug and Alcohol Research Centre; UNSW Australia; New South Wales
4. Hunter Medical Research Institute; New South Wales
5. Centro de Epidemiología y Políticas de Salud (Center for Epidemiology and Health Policies), Facultad de Medicina/CAS; Universidad del Desarrollo; Región Metropolitana Chile