HMOs, employers happier with their PBMs.
D003258:Consumer Behavior / Q000706:statistics & numerical data*; D003625:Data Collection; D006264:Health Benefit Plans, Employee / Q000592:standards / Q000706:statistics & numerical data*; D006279:Health Maintenance Organizations / Q000592:standards / Q000706:statistics & numerical data*; D007356:Insurance, Pharmaceutical Services / Q000592:standards*; D014481:United States