Patterns of ambulatory care in pediatrics: The National Ambulatory Medical Care Survey.
D000293:Adolescent; D000328:Adult; D000553:Ambulatory Care / Q000706:statistics & numerical data*; D002648:Child; D002675:Child, Preschool; D005006:Ethnicity; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009819:Office Visits / Q000639:trends; D010372:Pediatrics / Q000639:trends*; D014481:United States