Allianz Life Ins. Co. of N. Amer.; Amer. Equity Inv. Life Ins. Co.; Amer. Natl. Ins. Co.; Americom Life & Annuity Ins. Co.; Chase Ins. Life & Annuity Co.; Chesapeake Life Ins. Co.; Conseco Health Ins. Co.; Conseco Ins. Co.; Conseco Life Ins. Co.; Equitable Life & Cas. Ins.; First Colony Life Ins. Co.; First Guaranty Ins. Co.; GE Life & Annu. Assur. Co.; Govt. Personnel Mut. Life; Loyal Amer. Life Ins. Co.; Metropolitan Life Ins. Co.; Mut. of Omaha Ins. Co.; Oxford Life Ins. Co.; Pan American Assur. Co.; Pan American Life Ins. Co.; Presidential Life Ins. Co.; Reliastar Life Ins. Co.; Standard Life & Accd. Ins. Co.; State Mut. Ins. Co.; United Healthcare Ins. Co.; United of Omaha Life Ins. Co.; United Teacher Associates; United World Life Ins. Co.