Statistics and ethics in medical research: study design.
D035843:Biomedical Research; D002986:Clinical Trials as Topic; D004812:Epidemiologic Methods; D004992:Ethics, Medical; D006805:Human Experimentation; D006801:Humans; D007258:Informed Consent; D018579:Patient Selection; D010919:Placebos; D011897:Random Allocation; D012107:Research Design / Q000592:standards*; D035842:Research Subjects; D013223:Statistics as Topic
D010919:Placebos