Pang, Cheng-gang
Yang, Xiong-gang
Zhao, Yun-long
Liu, Yan-cheng
Hu, Yong-cheng
Article History
Received: 23 October 2020
Accepted: 18 August 2021
First Online: 3 September 2021
Declarations
:
: This study was performed according to the “Declaration of Helsinki” (as revised in 2013) and was approved by the ethics committee of Tianjin Hospital. Informed consent was waived by the Institutional Ethics Committee of Tianjin Hospital because of the retrospective nature of this study.
: Not applicable.
: The authors declare that they have no competing interests.