Epidemiology of headache in elderly--correlations with life conditions and socio-professional environment.
D000368:Aged; D005260:Female; D006261:Headache / Q000453:epidemiology* / Q000523:psychology; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009790:Occupations; D012931:Social Environment