title: The use of placebos: a study of ethics and physicians' attitudes.
mesh_terms: D000367:Age Factors; D001291:Attitude of Health Personnel; D004992:Ethics, Medical; D006801:Humans; D008511:Medicine; D010820:Physicians; D010919:Placebos; D011331:Private Practice; D011572:Psychoanalysis; D012106:Research; D013038:Specialization; D011795:Surveys and Questionnaires; D013997:Time Factors; D014481:United States
chemical_list: D010919:Placebos