Funding for this research was provided by:
345 Talent Project of Shengjing Hospital of China Medical University
Received: 17 September 2020
Accepted: 15 December 2020
First Online: 28 January 2021
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committee of Shengjing Hospital of China Medical University (Ethical No. 2020PS522K). Informed consent was waived due to the retrospective nature of this study and no interference for patients ‘treatments which was also permitted by Ethics Committee of Shengjing Hospital of China Medical University.
: Not applicable.
: All authors declare no conflict of interest.