title: EXPERIENCES IN CLINICAL STUDIES OF HEADACHE: HEADACHE--PSYCHE--PLACEBO.
mesh_terms: D035843:Biomedical Research; D006261:Headache; D006801:Humans; D008881:Migraine Disorders; D010919:Placebos; D011584:Psychology
chemical_list: D010919:Placebos
keywords: CLINICAL RESEARCH; MIGRAINE; PLACEBOS; PSYCHOLOGY