[1] Univ New S Wales, UNSW Australia, Natl Drug & Alcohol Res Ctr, Sydney, NSW, Australia
[2] Univ Tasmania, Hobart, Tas, Australia
[3] South Eastern Sydney Local Hlth Dist, Langton Ctr, Sydney, NSW, Australia
[4] Univ Sydney, Sydney, NSW 2006, Australia
[5] St Vincents Hosp, Sydney, NSW 2010, Australia
[6] Univ New S Wales, UNSW Australia, Sydney, NSW, Australia