1. SAMHSA (2011) Results from the 2010 National Survey on Drug Use and Health (NSDUH). NSDUH Series H-41. Rockville, MD
2. Wolf BC, Lavezzi WA, Sullivan LM, Flannagan LM (2004) Methadone-related deaths in Palm Beach County. J Forensic Sci 49:375–378
3. MacGowan RJ, Fichtner RR, Swanson N, Collier C, Kroliczak A, Cole G (1997) Factors associated with client-reported HIV infection among clients entering methadone treatment. AIDS Educ Prev 9:205–217
4. Meandzija B, O’Connor PG, Fitzgerald B, Rounsaville BJ, Kosten TR (1994) HIV infection and cocaine use in methadone maintained and untreated intravenous drug users. Drug Alcohol Depend 36:109–113
5. Horgan C, Skwara KC, Strickler G, Andersen L (2001) Substance abuse: the nation’s number one health problem. Schneider Institute for Health Policy, Brandeis University (prepared for the Robert Wood Johnson Foundation), Waltham, MA