Liao, Rujun
Hu, Lin
Liao, Qiang
Zhu, Tianyu
Yang, Haiqun
Zhang, Tao
Funding for this research was provided by:
Sichuan Science and Technology Program (2020YFS0015, 2020YFS0091, 2021YFS0001-LH)
Health Commission of Sichuan Province (20PJ092)
National Natural Science Foundation of China (81602935)
Chongqing Science and Technology Program (cstc2020jscx-cylhX0003)
Sichuan University (2018hhf-26, GSSCU2018038)
Central government funding items (2021zc02)
Liangshan Yi autonomous prefecture Center for Disease Control and Prevention (H210322)
Article History
Received: 10 August 2021
Accepted: 28 December 2021
First Online: 13 January 2022
Declarations
:
: All methods were carried out in accordance with <i>Data Security Law of the People’s Republic of China</i>, <i>World Medical Association Declaration of Helsinki</i> and other relevant guidelines and regulations. All the data involved in this research were taken from observational records and no experiments were implemented by the researchers, so informed consent was not required for this study. This study has been approved by the ethics committee of the Sichuan Center for Disease Control and Prevention (reference number: SCCDCIRB-2021-019).
: Not applicable.
: The authors declare that they have no competing interests.