title: Telephone service answered.
mesh_terms: D002497:Centralized Hospital Services / Q000191:economics*; D003365:Costs and Cost Analysis; D006739:Hospital Administration / Q000191:economics*; D007348:Insurance, Health / Q000191:economics; D007349:Insurance, Health, Reimbursement / Q000191:economics; D006278:Medicare / Q000191:economics; D013689:Telephone; D014481:United States