From the Department of Geriatric Medicine (R.M., J.H., N.T., I.K., M.A., A.M., S.H., T.O.) and the Institute for Molecular and Cellular Biology (Y.K.), Osaka University Medical School, Suita; Shinotest Co, Tokyo (S.Y.); and the Ohmiya Medical Center, Jichi Medical School, Omiya (I.S.), Japan.(1998-08時点)