Funding for this research was provided by:
Key Technologies Research and Development Program (2018YFC1311404)
Received: 1 March 2021
Accepted: 21 April 2021
First Online: 6 May 2021
: The study was approved by the institutional review board of The First Affiliated Hospital of Chongqing Medical University. The requirement for informed consent was waived because of the retrospective nature of this study.
: Not applicable.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.