title: Success rates for new drugs entering clinical testing in the United States.
authors.affiliation: Center for the Study of Drug Development, Tufts University, Boston, MA 02111, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: DiMasi
mesh_terms: D002626:Chemistry, Pharmaceutical / Q000191:economics / Q000706:statistics & numerical data / Q000639:trends; D002986:Clinical Trials as Topic; D017277:Drug Approval / Q000706:statistics & numerical data*; D006801:Humans; D004364:Pharmaceutical Preparations / Q000191:economics; D014481:United States
chemical_list: D004364:Pharmaceutical Preparations