Zhang, Jianghua
Zhang, Yunbao
Wu, Zhiyi
Fu, Xuemei
Funding for this research was provided by:
major project of National Natural Science Foundation of China (72293580, 72293582)
National Natural Science Foundation of China (72071121, 71701125)
Social Science Planning Research Project of Shandong Province (20DGLJO12)
Fundamental Research Funds of Shandong University (2019GN008)
Cyrus Chung Ying Tang Foundation
Article History
Received: 14 August 2023
Accepted: 11 January 2024
First Online: 16 January 2024
Declarations
:
: The CLHLS study was approved by the Research Ethics Committee of Peking University (IRB00001052–13,074). All participants provided written informed consent, which was obtained from literate participants and legal guardian(s)/next of kin of illiterate participants. All methods were performed in accordance with the guidelines and regulations.
: Not applicable.
: The authors declare no competing interests.