[1] Univ New S Wales, Natl Drug & Alcohol Res Ctr, Sydney, NSW 2052, Australia
[2] Univ Tasmania, Sch Med Psychol, Hobart, Tas, Australia
[3] Univ Queensland, Queensland Alcohol & Drug Res & Educ Ctr, Brisbane, Qld, Australia
[4] Univ Newcastle, Sch Med & Publ Hlth, Ctr Clin Epidemiol & Biostat, Newcastle, NSW 2300, Australia
[5] Curtin Univ, Natl Drug Res Inst, Perth, WA 6845, Australia