Funding for this research was provided by:
National Natural Science Foundation of China (31700958)
Technology Innovation and Application Project of Chongqing (cstc2018jscx-msybX0119)
Received: 27 December 2017
Accepted: 20 May 2019
First Online: 3 June 2019
Ethics approval and consent to participate
: This study was carried out in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of the Third Military Medical University with written informed consent from all subjects. All subjects were asked to provide written informed consent in accordance with the Declaration of Helsinki. The protocol was approved by the regional ethics committee of the Third Military Medical University.
: Not applicable.
: The authors declare that they have no competing interests.