| Company(ies): | Aetna Health Inc (Nj), Blue Cross Blue Shield of Florida, CIGNA Corporation, Coventry Health Care, Inc., Group Health Cooperative, Health Care Service Corporation, Health Net, Inc, HealthMarkets, Inc., HIP Health Plan of New York, Humana Inc., Kaiser Foundation Health Plan, Inc., Trustmark Corporation, UnitedHealth Group Inc., WellPoint, Inc.
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