title: An electromyographic investigation of the neck muscles in headache.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002574:Cervical Vertebrae / Q000503:physiopathology; D004576:Electromyography; D005260:Female; D006261:Headache / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000503:physiopathology*; D009333:Neck / Q000503:physiopathology*; D010003:Osteoarthritis / Q000000981:diagnostic imaging; D011859:Radiography