Whither the "nurse" in nurse practitioner?
D000574:American Medical Association; D003695:Delivery of Health Care; D004509:Education, Nursing, Continuing; D005380:Financing, Government; D009722:Nurse Practitioners / Q000193:education / Q000706:statistics & numerical data; D010372:Pediatrics; D010823:Physician Assistants / Q000193:education / Q000706:statistics & numerical data; D011787:Quality of Health Care; D012926:Social Control, Formal; D014481:United States; D000078329:Workforce