Regional morbidity.
D000041:Absenteeism; D000293:Adolescent; D000328:Adult; D005260:Female; D005843:Geography; D006801:Humans; D007352:Insurance, Life; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D012737:Sex Factors; D013223:Statistics as Topic; D014481:United States