title: The emergency medical care system.
mesh_terms: D000068:Accreditation; D000574:American Medical Association; D003142:Communication; D003153:Community Health Services; D004636:Emergency Service, Hospital; D005392:First Aid / Q000145:classification; D006266:Health Education; D006801:Humans; D011315:Preventive Medicine; D014187:Transportation of Patients; D014481:United States