[1] South Eastern Sydney Local Hlth Dist, Drug & Alcohol Serv, Sydney, NSW, Australia
[2] Univ Sydney, Sydney Med Sch, Cent Clin Sch, Discipline Addict Med, Sydney, NSW 2006, Australia
[3] Univ New S Wales, Sch Publ Hlth & Community Med, Sydney, NSW, Australia
[4] Univ New S Wales, Sch Psychiat, Sydney, NSW, Australia
[5] Prince Wales Hosp, Sydney & Acad, Dept Old Age Psychiat, Sydney, NSW, Australia