1. Department of Endocrinology (D.C.K., H.L., C.L., M.V.-W., A.G., M.K., C.Z., A.B., V.R., X.Y.), Oklahoma City, Oklahoma 73104
2. Heart Rhythm Institute (D.C.K., H.L., X.Y.), Oklahoma City, Oklahoma 73104
3. G. V. (Sonny) Montgomery Veterans Affairs Medical Center and University of Mississippi Medical Center (C.V.-M., C.E.G.-S.), Jackson, Mississippi 39216
4. Department of Microbiology and Immunology (M.W.C.), University of Oklahoma Health Sciences Center and Veterans Affairs Medical Center, Oklahoma City, Oklahoma 73104