title: Patients' reasons for visiting physicians: National Ambulatory Medical Care Survey. United States, 1977-78.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000553:Ambulatory Care / Q000706:statistics & numerical data; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D010820:Physicians / Q000706:statistics & numerical data*; D012737:Sex Factors; D014481:United States