No abstract available
MeSH terms
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Accidents, Traffic
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Allied Health Personnel / education
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Ambulances / standards
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Critical Care
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Delivery of Health Care
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Emergency Medical Services / history*
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Emergency Service, Hospital / standards
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Financing, Government
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Health Occupations / education
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History, 20th Century
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Legislation as Topic
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Radio
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Telephone
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Transportation of Patients
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United States