title: Psychological correlates of frontalis EMG and pain in tension headache.
mesh_terms: D000293:Adolescent; D000328:Adult; D004576:Electromyography; D005260:Female; D006261:Headache / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D010146:Pain; D010551:Personality