Sunaga, A., Hikoso, S., Yamada, T., Yasumura, Y., Uematsu, M., Tamaki, S., Abe, H., Nakagawa, Y., Higuchi, Y., Fuji, H., Mano, T., Kurakami, H., Yamada, T., Kitamura, T., Sato, T., Oeun, B., Kida, H., Kojima, T., Sotomi, Y., Dohi, T., Okada, K., Suna, S., Mizuno, H., Nakatani, D., Sakata, Y., & , (2021). prognostic impact of Clinical Frailty Scale in patients with heart failure with preserved ejection fraction. ESC heart failure, 8, 3316–3326. http://access.bl.uk/ark:/81055/vdc_100136730873.0x00000f