Human experiment.
D003813:Dentistry; D035082:Federal Government; D006076:Government; D006805:Human Experimentation; D006801:Humans; D007258:Informed Consent; D009316:National Institutes of Health (U.S.); D010146:Pain; D004364:Pharmaceutical Preparations; D011640:Public Policy; D012107:Research Design
Biomedical and Behavioral Research; National Institutes of Health