Evaluative criteria for emergency ambulance systems.
D000063:Accidents, Traffic / Q000517:prevention & control; D000552:Ambulances / Q000592:standards* / Q000706:statistics & numerical data; D002641:Chicago; D004632:Emergency Medical Services / Q000592:standards* / Q000706:statistics & numerical data; D004636:Emergency Service, Hospital; D005069:Evaluation Studies as Topic; D005392:First Aid; D006801:Humans; D014187:Transportation of Patients; D014481:United States