1. Toranomon Hospital, Tokyo, Japan (Y. Ouchi, M.K.).
2. International University of Health and Welfare, Fukuoka, Japan (J.S.).
3. National Center for Geriatrics and Gerontology, Obu, Japan (H.A.).
4. Chiba University, Chiba, Japan (K.Y.).
5. Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan (K.H., H.I.).
6. General Tokyo Hospital, Tokyo, Japan (Y.K.).
7. Juntendo University Urayasu Hospital, Urayasu, Japan (T.U.).
8. Saga Memorial Hospital, Saga, Japan (Y.U.).
9. Nagahama City Hospital, Nagahama, Japan (M.H.).
10. Yokota Clinic, Miyazaki, Japan (N.Y.).
11. Nishida Clinic, Neyagawa, Japan (H.N.).
12. Otonari Clinic, Chikushino, Japan (T.O.).
13. Arai Clinic, Yamagata, Japan (T.A.).
14. Caress Sapporo Hokko Memorial Clinic, Sapporo, Japan (I.S.).
15. Sakabe Clinic, Kyoto, Japan (K.S.).
16. Yamamoto Clinic, Shimoniikawa, Japan (M.Y.).
17. Jyuzen General Hospital, Niihama, Japan (T.K.).
18. Fukujuji Hospital, Tokyo, Japan (S.O.).
19. Rinku General Medical Center, Izumisano, Japan (S.Y.).
20. Osaka University, Suita, Japan (H.R.).
21. Kyoto University, Japan (T.I., S.T.).
22. Chuo University, Tokyo, Japan (Y. Osachi).