title: Human subjects in clinical research -- a report of three studies.
mesh_terms: D000397:Air Pollution; D001290:Attitude; D002986:Clinical Trials as Topic; D003139:Common Cold; D064420:Drug-Related Side Effects and Adverse Reactions; D004992:Ethics, Medical; D005191:Family Characteristics; D005260:Female; D016027:Heart Transplantation; D006805:Human Experimentation; D006801:Humans; D007182:Income; D008288:Malaria; D008297:Male; D009042:Motivation; D009790:Occupations; D011330:Prisons; D012737:Sex Factors; D012959:Socioeconomic Factors; D014019:Tissue Donors; D014184:Transplantation, Homologous