Emergency medical care as a comprehensive system.
D000059:Accidents; D000401:Aircraft; D000488:Allied Health Personnel / Q000592:standards; D000552:Ambulances / Q000592:standards; D003695:Delivery of Health Care; D004632:Emergency Medical Services; D004636:Emergency Service, Hospital / Q000592:standards; D006077:Government Agencies; D006266:Health Education; D006285:Health Planning; D006801:Humans; D007255:Information Services; D009026:Mortality; D009934:Organization and Administration; D010820:Physicians / Q000600:supply & distribution; D012040:Regional Health Planning; D012926:Social Control, Formal; D014481:United States; D000078329:Workforce