An epidemiological study of headache in a hospital staff.
D000293:Adolescent; D000328:Adult; D005260:Female; D006261:Headache / Q000453:epidemiology*; D006801:Humans; D007558:Italy; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D010564:Personnel, Hospital; D011795:Surveys and Questionnaires; D014653:Vascular Headaches / Q000453:epidemiology