Bai, Yashuang
Liu, Xiaohan
Zhang, Bo
Fu, Mingqi
Huang, Ning
Hu, Qitu
Guo, Jing
Funding for this research was provided by:
China National Social Science Foundation (20VYJ042)
Article History
Received: 8 September 2021
Accepted: 7 April 2022
First Online: 19 April 2022
Declarations
:
: The study protocol was approved by the Institutional Review Board of Peking University Medical Center, Beijing, China. After being informed about the survey’s aims, all participants gave informed consent and joined the study voluntarily. For adolescents, informed consent was obtained from their parents/legally authorized representatives. Relevant guidelines and regulations carried out all methods.
: Not applicable.
: The author reports no conflicts of interest in this work.