Research ArticleOpen accessIn the keywordsObservations on the Relationship between Opioid Medications, Illicit Drugs and Heroin Use in Pain PatientsDavid AlanYee, Michelle Marie Hughes, Rabia Samady Atayee et al.American Journal of Pharmacology and Toxicology, Vol. 6, Issue 1 · 7 Jun 2011 · 7,957 accessesView PDFCite