Funding for this research was provided by:
National Nature Science Foundation of China (81870445)
National Natural Science Foundation of China (81727802)
Received: 2 June 2020
Accepted: 23 November 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: This retrospective study was approved by the institutional review board of the First Affiliated Hospital, Xi’an Jiaotong University (XJTU1AF2015LSL-057), and the informed consent is not required for this type of study. The permission to access the data used in this study was obtained from the institutional review board of the First Affiliated Hospital, Xi’an Jiaotong University.
: Not applicable.
: The authors declare that they have no competing interests.