The old file-drawer problem.
Donald
D
Kennedy
D022126:Access to Information; D002986:Clinical Trials as Topic / Q000331:legislation & jurisprudence; D016208:Databases, Factual / Q000331:legislation & jurisprudence; D004345:Drug Industry; D006801:Humans; D017594:Publication Bias; D011643:Publishing; D012042:Registries; D014481:United States