AETNA DENTAL INC.

AETNA HEALTH INC.

AETNA HEALTH INSURANCE COMPANY

AETNA LIFE INSURANCE COMPANY

AIG LIFE INSURANCE COMPANY

ALPHA DENTAL PROGRAMS, INC.

AMCARE HEALTH PLANS OF TEXAS INC

AMERICAN FAMILY LIFE ASSURANCE COMPANY OF COLUMBUS

AMERICAN GENERAL LIFE INSURANCE COMPANY

AMERICAN NATIONAL LIFE INSURANCE COMPANY OF TEXAS

AMERICAN PUBLIC LIFE INSURANCE COMPANY

AMERIHEALTH INSURANCE COMPANY

BANNER LIFE INSURANCE COMPANY

BEST LIFE AND HEALTH INSURANCE COMPANY

BLUE CROSS AND BLUE SHIELD OF TEXAS, A DIVISION OF HEALTH CARE SERVICE C

CELTIC INSURANCE COMPANY

CIGNA HEALTHCARE OF TEXAS, INC.

COLONIAL LIFE AND ACCIDENT INSURANCE COMPANY

CONNECTICUT GENERAL LIFE INSURANCE COMPANY

DELTA DENTAL INSURANCE COMPANY

FIDELITY SECURITY LIFE INSURANCE COMPANY

FIRST CONTINENTAL LIFE & ACCIDENT INSURANCE CO.

FORT DEARBORN LIFE INSURANCE COMPANY

GHS PROPERTY AND CASUALTY INSURANCE COMPANY

GOLDEN RULE INSURANCE COMPANY

GUARANTEE TRUST LIFE INSURANCE COMPANY

HUMANA HEALTH PLAN OF TEXAS, INC.

HUMANA INSURANCE COMPANY

HUMANADENTAL INSURANCE COMPANY

KANAWHA INSURANCE COMPANY

LEADERS LIFE INSURANCE COMPANY

PACIFICARE LIFE AND HEALTH INSURANCE COMPANY

PACIFICARE LIFE ASSURANCE COMPANY

PACIFICARE OF TEXAS, INC.

PAN-AMERICAN LIFE INSURANCE COMPANY

RELIANCE STANDARD LIFE INSURANCE COMPANY

SAFEHEALTH LIFE INSURANCE COMPANY

SECURIAN LIFE INSURANCE COMPANY

STANDARD SECURITY LIFE INSURANCE COMPANY OF NEW YORK

SUN LIFE AND HEALTH INSURANCE COMPANY (U.S.)

SUN LIFE ASSURANCE COMPANY OF CANADA

TIME INSURANCE COMPANY

TRANSAMERICA LIFE INSURANCE COMPANY

UNICARE LIFE & HEALTH INSURANCE COMPANY

UNION CENTRAL LIFE INSURANCE COMPANY, THE

UNION SECURITY INSURANCE COMPANY

UNITED HEALTHCARE INSURANCE COMPANY

UNITED STATES LIFE INSURANCE COMPANY IN THE CITY OF NEW YORK, THE

UNITEDHEALTHCARE OF TEXAS, INC.