Deng, Wenhui
Sun, Rui
Du, Jun
Wu, Xue
Ma, Lijie
Wang, Min
Lv, Qiubo
Article History
Received: 5 March 2021
Accepted: 23 September 2021
First Online: 10 February 2022
Declarations
:
: We confirm that all methods were carried out in accordance with relevant guidelines and regulations. An informed consent was exempted by Committee on Human Research (Institutional Review Board) of the Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences. The study protocol was approved by Committee on Human Research (Institutional Review Board) of the Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences (approval notice: No.2020BJYYEC-279-01).
: Not applicable.
: I declare that the authors have no competing interests as defined by BMC, or other interests that might be perceived to influence the results and/or discussion reported in this paper.