Drugmakers prefer silence on test data; firms violate US law by not registering trials.
Shankar
S
Vedantam
D002986:Clinical Trials as Topic / Q000331:legislation & jurisprudence*; D016208:Databases, Factual; D030881:Disclosure / Q000331:legislation & jurisprudence*; D004345:Drug Industry / Q000331:legislation & jurisprudence*; D033161:Government Regulation; D006801:Humans; D012042:Registries; D012109:Research Support as Topic; D014481:United States; D014486:United States Food and Drug Administration