Declaration of Helsinki should be strengthened.
Department of Epidemiology, Boston University School of Public Health, Boston University Medical Center, Boston, MA 02118-2526, USA. KRothman@bu.edu
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D002986:Clinical Trials as Topic; D006381:Helsinki Declaration; D006805:Human Experimentation; D006801:Humans; D007258:Informed Consent; D007391:International Cooperation; D012107:Research Design; D014481:United States; D014486:United States Food and Drug Administration