How many subjects are required for a study?
D030881:Disclosure; D017041:Ethics Committees; D028744:Ethics Committees, Research; D006805:Human Experimentation; D006801:Humans; D007258:Informed Consent; D018579:Patient Selection; D004364:Pharmaceutical Preparations; D012107:Research Design; D035842:Research Subjects; D013223:Statistics as Topic
Biomedical and Behavioral Research