Received: 13 May 2021
Accepted: 23 December 2021
First Online: 7 January 2022
: The clinical data was acquired with the approval and permission of the Institutional Review Board of the Sun Yat-sen University Cancer Center. The study protocol was approved by the ethical committee of Sun Yat-sen University Cancer Center (approval number SZR2019–016) and the study was performed in accordance with the principles of the Declaration of Helsinki. Informed consent was not required because this study was a retrospective report of cases, which is a retrospective analysis of clinical data with no relevant to human biological ethic problems. The need of informed consent was waived by the ethical committee of the Sun yat-sen University Cancer Center.All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.