1. Follow-up study of narcotic drug addicts five years after hospitalization;Duvall;Public Health Rep,1963
2. An overview of heroin trends in New York City: past, present and future;Frank;Mt Sinai J Med,1999
3. Methadone patients on probation and parole;Joseph;Fed Probation,1970
4. Drug poisoning deaths in the United States, 1980-2008;Warner;NCHS Data Brief,2011
5. CDC grand rounds: prescription drug overdoses—a US epidemic;MMWR Morb Mortal Wkly Rep,2012