The nurse practitioner as an economic reality.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003258:Consumer Behavior; D004470:Economics, Medical; D005249:Fees and Charges; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009722:Nurse Practitioners / Q000706:statistics & numerical data*; D009730:Nursing Assessment; D010342:Patient Acceptance of Health Care; D011320:Primary Health Care