Frailty risk stratification using a senior volunteer-driven frailty check-up and subsequent long-term care and healthcare expenditures: A cohort study Publication date: June 2026 Source: Archives of Gerontology and Geriatrics Plus, Volume 3, Issue 2 Author(s): Tomoki Tanaka, Yasuyo Yoshizawa, Weida Lyu, Katsuya Iijima