1. Literature on methadone maintenance clinics;Liappas;Int J Addict,1988
2. Drug misusers in police custody;Payne-James;J R Soc Med,1994
3. Deaths of drug addicts in the UK 1967-1981;Ghodse;BMJ,1985
4. Opioid drug deaths in Western Australia: 1974-1984;Swenson;Aust Drug Alcohol Rev,1988