title: Temporal changes in the external validity of clinical trials: asymptomatic carotid artery stenosis.
authors.affiliation: Department of Neurology, Duke Stroke Center, Duke University Medical Center, and Durham VA Medical Center, Durham, N.C., USA.
authors.forename: Larry B
authors.initials: LB
authors.lastname: Goldstein
mesh_terms: D058070:Asymptomatic Diseases; D016893:Carotid Stenosis / Q000188:drug therapy*; D005343:Fibrinolytic Agents / Q000627:therapeutic use*; D006801:Humans; D000960:Hypolipidemic Agents / Q000627:therapeutic use*; D020521:Stroke / Q000517:prevention & control*
chemical_list: D005343:Fibrinolytic Agents; D000960:Hypolipidemic Agents