title: Biofeedback and relaxation in the treatment of tension headaches: a reply to Belar.
mesh_terms: D001676:Biofeedback, Psychology; D004576:Electromyography; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D008297:Male; D011602:Psychophysiologic Disorders / Q000628:therapy*; D012064:Relaxation Therapy; D012107:Research Design; D012737:Sex Factors