Funding for this research was provided by:
Xi’an Science and Technology Program (SF1514(4))
Shaanxi social development of science and technology research project (2016SF-099)
Second Affiliated Hospital of Xi`an Jiaotong University KeJiXinMiao Fund (RC(XM)201505)
Received: 23 February 2020
Accepted: 15 July 2020
First Online: 23 July 2020
Ethics approval and consent to participate
: Study protocol was approved by The Institutional Review Board of The Second Affiliated Hospital of Xi’an Jiaotong University. Informed consent to participate was waived because patients’ data were retrospectively reviewed and analyzed.
: Informed consent for publication was obtained from all the study subjects.
: The authors declare that they have no competing interests.