Kawai, Hisashi
Obuchi, Shuichi
Hirayama, Ryo
Watanabe, Yutaka
Hirano, Hirohiko
Fujiwara, Yoshinori
Ihara, Kazushige
Kim, Hunkyung
Kobayashi, Yoshiyuki
Mochimaru, Masaaki
Tsushima, Eiki
Nakamura, Kozo
Article History
Received: 22 February 2021
Accepted: 15 June 2021
First Online: 8 July 2021
Declarations
:
: This study was conducted in accordance with the 1964 Declaration of Helsinki and its later amendments. The study was approved by the ethics committee of the Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology (no. K120; 2018).Informed consent was obtained from all individual participants in the study.
: Not applicable.
: The authors declare that they have no conflict of interest.