Yang, Shuguang
Zhao, Huiying
Yang, Jianhui
An, Youzhong
Zhang, Hua
Bao, Yudi
Gao, Zhidong
Ye, Yingjiang
Article History
Received: 15 June 2021
Accepted: 8 November 2021
First Online: 18 December 2021
Declarations
:
: The medical ethics committee of our college (Peking University People’s Hospital) approved the retrospective study. As the study was retrospective, it did not affect the diagnosis and treatment of patients. The informed consent was waived by the medical ethic committee of college (Peking University People’s Hospital). We confirm all methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.