Zhang, Ming
Xu, Xiaohe
Jiang, Jianjun
Ji, Yuanyi
Yang, Ruixi
Liu, Qijiao
Li, Shiying
Li, Yuchen
Liu, Qiaolan
Article History
Received: 30 January 2023
Accepted: 22 June 2023
First Online: 10 July 2023
Declarations
:
: All procedures of the study have been performed in accordance with the <i>Helsinki Declaration</i> and approved by the Medical Ethical Committee of Sichuan University (No. K2018086). Informed consent of guardians and participants was secured before the survey was conducted.
: Not applicable.
: The authors declare no competing interests.