Gold Book buyer's guide.
D000328:Adult; D000368:Aged; D000552:Ambulances / Q000458:organization & administration; D002648:Child; D004632:Emergency Medical Services / Q000458:organization & administration; D004864:Equipment and Supplies; D006801:Humans; D007231:Infant, Newborn; D014187:Transportation of Patients / Q000458:organization & administration; D014481:United States