Physician assistants & nurse practitioners: their impact on health care access, costs, and quality.
D003695:Delivery of Health Care / Q000191:economics; D006297:Health Services Accessibility; D008507:Medically Underserved Area; D009722:Nurse Practitioners / Q000600:supply & distribution; D010043:Outcome and Process Assessment, Health Care; D010823:Physician Assistants / Q000600:supply & distribution; D011320:Primary Health Care; D014481:United States; D000078329:Workforce