Patterns of ambulatory care in general and family practice: The National Ambulatory Medical Care Survey. United States, January 1980 - December 1981.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000553:Ambulatory Care / Q000706:statistics & numerical data*; D011307:Drug Prescriptions; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D014481:United States