Sizing up the top health insurers. Big-time buyer WellPoint, smart seller Aetna a study in contrasts.
Benko
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LB
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