Air-care emergency helicopter service: a six-month update.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000401:Aircraft; D002648:Child; D004636:Emergency Service, Hospital / Q000458:organization & administration*; D006785:Hospitals, University; D006801:Humans; D007484:Iowa; D008297:Male; D014187:Transportation of Patients / Q000379:methods