Received: 15 October 2020
Accepted: 10 March 2021
First Online: 19 March 2021
: Funding statement: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
: This study was approved by the Ethical Committee of Chongqing Medical University.
: All the authors agree to the publication of this manuscript.
: The authors declare that they have no competing interests.