Funding for this research was provided by:
National Natural Science Foundation of China (81371798)
Received: 7 April 2020
Accepted: 11 June 2020
First Online: 22 June 2020
Ethics approval and consent to participate
: All procedures involving human participants were approved by the Ethics Committee of the First Affiliated Hospital of Xi’an Jiaotong University. The study was performed in accordance with Helsinki Declaration. All subjects signed informed consent and volunteered to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.