title: Cynthia'a dilemma.
authors.affiliation: University of Pennsylvania
authors.forename: Charles P
authors.initials: CP
authors.lastname: O'Brien
mesh_terms: D002986:Clinical Trials as Topic / Q000941:ethics*; D032984:Ethics, Research; D003932:Heroin / Q000627:therapeutic use*; D006556:Heroin Dependence / Q000188:drug therapy*; D006801:Humans; D008691:Methadone / Q000627:therapeutic use
chemical_list: D003932:Heroin; D008691:Methadone