Special report. Hospital air ambulance services: trying to get Medicare payments off the ground.
D000401:Aircraft / Q000191:economics*; D000552:Ambulances / Q000191:economics*; D004636:Emergency Service, Hospital / Q000191:economics; D007349:Insurance, Health, Reimbursement; D006278:Medicare / Q000331:legislation & jurisprudence*; D014481:United States