Fang, Cheng
Xiang, Yangwei
Han, Weili
Article History
Received: 4 January 2022
Accepted: 14 April 2022
First Online: 29 April 2022
Declarations
:
: The study followed the ethical standards of the World Medical Association Declaration of Helsinki and all methods were performed in accordance with relevant guidelines and regulations. This was a retrospective study, informed consent was waived (approved by Clinical Research Ethics Committee of the First Affiliated Hospital of Zhejiang University).
: Not applicable.
: We declare that there are no competing interests.