Patterns of ambulatory care in office visits to general surgeons: The National Ambulatory Medical Care Survey. United States, January 1980-December 1981.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000556:Ambulatory Surgical Procedures / Q000706:statistics & numerical data*; D002648:Child; D005260:Female; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D009819:Office Visits; D011364:Professional Practice; D012424:Rural Population; D012737:Sex Factors; D012959:Socioeconomic Factors; D014481:United States; D014505:Urban Population