Patterns of ambulatory care in obstetrics and gynecology: The National Ambulatory Medical Care Survey. United States, January 1980-December 1981.
D000293:Adolescent; D000328:Adult; D000553:Ambulatory Care / Q000706:statistics & numerical data*; D005260:Female; D006176:Gynecology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009774:Obstetrics; D009819:Office Visits; D011247:Pregnancy; D013223:Statistics as Topic; D014481:United States