The National Ambulatory Medical Care Survey, United States, 1979 summary.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000553:Ambulatory Care / Q000706:statistics & numerical data*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006306:Health Surveys; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010820:Physicians / Q000706:statistics & numerical data; D012737:Sex Factors; D014481:United States