Funding for this research was provided by:
National Natural Science Foundation of China (81600720, 8137099)
Natural Science Foundation of Shaanxi Province (2017JQ8012)
Received: 10 February 2019
Accepted: 25 March 2020
First Online: 6 April 2020
Ethics approval and consent to participate
: This prospective study protocol was approved by the ethics committee of the Tangdu Hospital of the Fourth Military Medical University (TDLL2015046). Written and verbal consent for participation in the study was obtained from all participants.
: Inform consent were acquired from each enrolled patient.
: The authors have declared no conflict of interest.