Guo, Qi Wei
Si, Yan Jun
Shen, Yi Lin
Chen, Xu
Yang, Mei
Fang, Ding Zhi
Article History
Received: 22 January 2020
Accepted: 25 November 2020
First Online: 5 January 2021
Compliance with Ethical Standards
:
: There authors declare that they have no competing interests.
: All procedures performed in this study were in accordance with the ethical standards of the ethics committee of Human Research Ethics Committee of Sichuan University, and with the 1964 Helsinki Declaration and its later amendments.