J Trauma
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An Emergency Medical Services (EMS) system with the capabilities of rapid response, patient extrication, basic life support, advanced life support, radio communication, and transportation provides appropriate care for a wide spectrum of injured and acutely ill patients. The validity of the selective dual response system in demonstrated by: 1) rapid provision of basic life support, 2) appropriate availability of advanced life support, 3) conservation of educational and fiscal resources, and 4) the enchancement of knowledge and manipulative skill expertise of relatively few, but busy, EMT-paramedics who are provided close medical supervision and support.