Association Between Timed Up-and-Go Test and Future Changes in the Frailty Status in a Longitudinal Study of Japanese Community-Dwelling Older Adults oleh Wada Y, Shojima K, Tamaki K, Mori T, Kusunoki H, Onishi M, Tsuji S, Matsuzawa R, Nagai K, Sano K, Hashimoto K, Goto M, Nagasawa Y, Shinmura K