Xu, Lingbin
Ge, Rong
Gao, Shanshan
Article History
Received: 15 November 2020
Accepted: 10 March 2021
First Online: 17 March 2021
Declarations
:
: The Institutional Review Board of Ningbo Medical Center Lihuili Hospital approved this study and waived the requirement for written informed consent due to its retrospective nature.
: Not applicable.
: The authors declare that they have no competing interests.