Funding for this research was provided by:
National Natural Science Foundation of China (81800390)
Natural Science Foundation of Shaanxi Province (2017JM8016, 2018KW067, 2016SF217)
the Fundamental Research Funds for the Central Universities in China (1191329724, 191329849)
the Clinical Research Award of the First Affiliated Hospital of Xi'an Jiaotong University (XJTU1AF-CRF-2018-025)
Received: 31 October 2019
Accepted: 9 March 2020
First Online: 14 March 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of the First Affiliated Hospital of Xi’an Jiaotong University. Written informed consent was obtained from all participants.
: All patients signed the informed consent.
: The authors declare that they have no competing interests.