Liu, Zhenzhen
Diao, Yuzhu
Li, Xiaoling
Article History
Received: 6 October 2021
Accepted: 31 May 2022
First Online: 28 July 2022
Declarations
:
: This was a retrospective study. The study was approved by the Ethics Committee of the Liaoning Cancer Institute and Hospital. The data are anonymous, and the requirement for informed consent was therefore met. All procedures performed in this study involving human participants were in accordance with the Declaration of Helsinki (as revised in 2013).
: Not applicable.
: There were no financial or nonfinancial competing interests.