Funding for this research was provided by:
Ministry of Science and Technology of the People’s Republic of China (2017ZX10103010-006, 2017ZX10103010-006, 2017ZX10103010-006)
Received: 14 August 2022
Revised: 30 September 2022
Accepted: 3 October 2022
First Online: 8 November 2022
: This study was approved by the Ethics Committee of Sichuan Center for Disease Control and Prevention. Informed consent was obtained from all individual participants including the underage permitted by their parents/guardians.
: Not applicable.
: No potential conflicts of interest were disclosed. The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.