Do "systematic barriers" improve the quality and efficiency of health care?
D000553:Ambulatory Care; D003695:Delivery of Health Care / Q000592:standards*; D003880:Dermatology / Q000592:standards; D006801:Humans; D010342:Patient Acceptance of Health Care; D010821:Physicians, Family / Q000592:standards / Q000706:statistics & numerical data*; D012871:Skin Diseases / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D014481:United States