Zhang, Jun
Shao, Jie
Zheng, Li
Shen, Ye
Zhao, Xia
Article History
Received: 16 March 2021
Accepted: 10 May 2021
First Online: 25 May 2021
Declarations
:
: This study was approved by the Institutional Review Board of the First Affiliated Hospital to the College of Medicine of Zhejiang University [MSKLL20190505]. All procedures adhered to the Declaration of Helsinki. The requirement for informed consent was waived because of the retrospective nature of the study. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.