Medicare HMOs. Making a hit with the senior set?
D003625:Data Collection; D019538:Health Care Surveys; D006279:Health Maintenance Organizations / Q000592:standards / Q000706:statistics & numerical data*; D006801:Humans; D006278:Medicare / Q000706:statistics & numerical data*; D017060:Patient Satisfaction / Q000706:statistics & numerical data*; D014481:United States