Funding for this research was provided by:
Young Scientists Fund (81901856)
Shengjing hospital of China Medical University (345 Talent Project)
Article History
Received: 18 March 2020
Accepted: 8 June 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: The Ethics Committee in Shengjing Hospital of China Medical University granted approval for this retrospective study (Approval No. 2019PS147K), and the requirement for informed consent was waived due to the retrospective nature of the study. All patient data were anonymised prior to the analysis.
: Not applicable.
: The authors declare that they have no competing interests.