Pay for performance improves rural EMS quality: investment in prehospital care.
D004632:Emergency Medical Services / Q000592:standards*; D006801:Humans; D008910:Minnesota; D019982:Organizational Case Studies; D015397:Program Evaluation; D019984:Quality Indicators, Health Care; D011787:Quality of Health Care / Q000191:economics*; D012052:Reimbursement, Incentive; D012189:Retrospective Studies; D019035:Rural Health Services