1. From the Department of Geriatric Medicine, Graduate School of Medicine, Kyoto University (N.K., H.K., M.M., T.K.), and the Department of Bioscience, National Cardiovascular Center Research Institute, Suita, Osaka (T.S., T.M.), Japan. T. Murase is now at Biological Science Laboratories, Kao Corp, Ichikaimachi, Tochigi, Japan.