title: Biofeedback: a demand for clinical expertise.
mesh_terms: D000328:Adult; D005246:Feedback; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011602:Psychophysiologic Disorders / Q000628:therapy; D019966:Substance-Related Disorders / Q000628:therapy