Funding for this research was provided by:
National Natural Science Foundation of China (81773108)
Received: 16 July 2020
Accepted: 31 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Shengjing Hospital of China Medical University. Informed consent was waived because of the retrospective design.
: Not applicable.
: The authors declare that they have no competing interests.