title: Sizing up the top health insurers. Big-time buyer WellPoint, smart seller Aetna a study in contrasts.
authors.forename: L B
authors.initials: LB
authors.lastname: Benko
mesh_terms: D003625:Data Collection; D019981:Health Care Sector; D007182:Income / Q000706:statistics & numerical data; D007343:Insurance Carriers / Q000191:economics* / Q000706:statistics & numerical data; D007348:Insurance, Health / Q000191:economics* / Q000706:statistics & numerical data; D014481:United States