Primary care.
Starfield
B
B
Johns Hopkins University School of Hygiene and Public Health, Baltimore, MD.
D003625:Data Collection; D017048:Health Care Costs / Q000706:statistics & numerical data; D006291:Health Policy / Q000639:trends*; D006302:Health Services Research; D008329:Managed Care Programs; D008511:Medicine; D011050:Policy Making; D011320:Primary Health Care / Q000458:organization & administration* / Q000706:statistics & numerical data; D013038:Specialization; D014481:United States