Akita, M., Otaki, N., Yokoro, M., Yano, M., Tanino, N., & Fukuo, K. (2021). Relationship Between Social Activity and Frailty in Japanese Older Women During Restriction on Outings due to COVID-19. Canadian Geriatrics Journal, 24(4), 320–324. https://doi.org/10.5770/cgj.24.507