Funding for this research was provided by:
National Natural Science Foundation of China (No. 81960291)
Received: 5 May 2021
Accepted: 4 September 2021
First Online: 7 October 2021
: This case-control study was conducted in accordance with the Declaration of Helsinki. And the protocol was approved by the Ethics Committee of the Xizang Minzu University. Written informed consents were obtained from all individuals. The procedures were in accordance with the institutional guidelines.
: All patients agreed to publish the manuscript.
: The authors declare that they have no competing interests.