title: Marketplace. PPOs juggling act: tighter controls without giving up their prime selling point.
authors.forename: D B
authors.initials: DB
authors.lastname: Moskowitz
mesh_terms: D003625:Data Collection; D019981:Health Care Sector / Q000639:trends; D006279:Health Maintenance Organizations / Q000191:economics / Q000706:statistics & numerical data; D006301:Health Services Needs and Demand; D011243:Preferred Provider Organizations / Q000191:economics / Q000706:statistics & numerical data*; D014481:United States