Wang, Wenxin
Chen, Jie
Jin, Xurui
Ping, Yongjing
Wu, Chenkai
Article History
Received: 30 April 2021
Accepted: 12 January 2022
First Online: 7 February 2022
Declarations
:
: The CLHLS study was approved by the Biomedical Ethics Committee of Peking University (IRB00001052–13074) and was conducted in accordance with the guidance of the Declaration of Helsinki. Signed written informed consent were collected from all participants in the entry and follow-up surveys. Administrative permissions and licenses were acquired from the CLHLS by our team to access the data used in our research. Our team only received de-identified survey data from the CLHLS.
: Not Applicable.
: All authors have no conflict of interests and no financial associations to disclose.