Zhao, Xuefei
Tan, Ning
Zhang, Ya
Xiao, Mengde
Li, Lihong
Ning, Zhongxing
Liu, Mingjiang
Jin, Haimin
Article History
Received: 25 February 2023
Accepted: 25 October 2023
First Online: 2 November 2023
Declarations
:
: All human subjects involved in this study were treated in accordance with the ethical principles outlined in the Declaration of Helsinki, and the study was approved by the Research Ethics Review Board of the National Center for Health Statistics (NCHS). The patients/participants provided their written informed consent to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.