Claims-based Frailty Index in Japanese Older Adults: A Cohort Study Using LIFE Study Data 論文 Kiyomasa Nakatsuka・Rei Ono・Shunsuke Murata・Toshihiro Akisue・Haruhisa Fukuda ·2023-03-24 ·『Journal of Epidemiology』 34(3) pp. 112-118 doi:10.2188/jea.je20220310