Xu, Kangjun
Liu, Xiyu
Liu, Jiaxin
Zhang, Yingying
Ding, Xiaohui
Li, Lin
Sun, Jiangwei
Funding for this research was provided by:
Chinese Scholarship Council (Not applicable.)
Karolinska Institute
Article History
Received: 27 April 2021
Accepted: 1 September 2021
First Online: 16 September 2021
Declarations
:
: All methods were performed in accordance with the relevant guidelines and regulations. Research Ethics Committees of Peking University approved the CLHLS, and written informed consents from all participants or their representatives were collected.
: Not applicable.
: The authors declare that they have no competing interests.