Chronic conditions and physician use patterns in ten urban poverty areas.
D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002908:Chronic Disease / Q000453:epidemiology*; D006801:Humans; D007182:Income; D008875:Middle Aged; D009017:Morbidity; D010820:Physicians / Q000706:statistics & numerical data*; D011203:Poverty; D014481:United States; D014505:Urban Population