Clinical trials registries.
Somberg
J
J
D002985:Clinical Protocols / Q000592:standards; D002986:Clinical Trials as Topic / Q000331:legislation & jurisprudence* / Q000592:standards; D006801:Humans; D017594:Publication Bias; D012042:Registries; D012107:Research Design / Q000592:standards*; D014481:United States; D014486:United States Food and Drug Administration