Funding for this research was provided by:
National Natural Science Foundation of China (81701625)
Department of Science and Technology of Sichuan Province (2019YJ0278)
Department of Science and Technology of Sichuan Province (CN) Project (2017SZ0128, 2018SZ0187)
Sichuan Cadre Health Committee Office (2017-1302)
Received: 25 July 2019
Accepted: 24 April 2020
First Online: 25 May 2020
Ethics approval and consent to participate
: All patients involved in the present study had thoroughly read and signed the informed consent. This study was approved by the ethics committee in the General Hospital of Western Theater Command.
: Not applicable.
: All the authors declare that they have no financial competing interests and non-financial competing interests concerning this article.