Aetna Inc.                                                                                       

CIGNA Group Insurance

Delta Dental of New York, Inc.

Emblem Health

First Rehabilitation Life Insurance Company of America

First Reliance Standard

Guardian Life Insurance Company of America

HealthNet

Healthplex, Inc.

Lincoln Financial Group

Metropolitan Life Insurance Company

Prudential Insurance Company of America

Security Mutual Life Insurance Company

The Standard

Sun Life Financial

United Healthcare

Unum