HMO cost variations still trouble corporate America.
D003363:Cost Control; D003625:Data Collection; D017049:Employer Health Costs / Q000706:statistics & numerical data / Q000639:trends; D005249:Fees and Charges / Q000639:trends*; D006264:Health Benefit Plans, Employee / Q000191:economics*; D006279:Health Maintenance Organizations / Q000191:economics*; D014481:United States