title: Clinical trials: nationally representative data in urology.
authors: Jay B
authors: JB
authors: Shah
authors: Vitaly
authors: V
authors: Margulis
mesh_terms: D002986:Clinical Trials as Topic / Q000706:statistics & numerical data*; D016208:Databases, Factual / Q000592:standards / Q000706:statistics & numerical data*; D006801:Humans; D012042:Registries / Q000592:standards / Q000706:statistics & numerical data; D014481:United States / Q000453:epidemiology; D014572:Urology / Q000592:standards / Q000706:statistics & numerical data*