title: EMG biofeedback in patients with chronic pain.
mesh_terms: D001676:Biofeedback, Psychology; D004576:Electromyography; D005152:Facial Muscles; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D010148:Intractable Pain / Q000175:diagnosis / Q000628:therapy*; D011569:Psychiatric Status Rating Scales