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Article History

Received: 8 August 2022

Accepted: 5 January 2023

First Online: 7 January 2023

Declarations

:

: This study was conducted according to the Declaration of Helsinki and approved by the Institutional Review Board of Sun Yat-sen Memorial Hospital, Sun Yat-sen University Cancer Center, Xiangya Hospital of Central South University, the Second Xiangya Hospital of Central South University, the Southwest Hospital of AMU, Union Hospital Tongji Medical College Huazhong University of Science and Technology, and Shandong Tumor Hospital.According to Article 39 of <i>The Measures for Ethical Research Involving Human Beings</i>, “if the subject cannot be found in the research using human body materials or data with identifiable information, and the research project does not involve personal privacy and commercial interests, the signing of informed consent may be exempted after the review and approval of the ethics committee”. This study was a retrospective study. Since most of the patients have not been treated in our hospital or the patients have died, it is difficult to ask the subjects to sign the informed consent form, and the research project does not involve personal privacy and commercial interests, the need for informed consent was waived by the Institutional Review Board of Sun Yat-sen Memorial Hospital, Sun Yat-sen University Cancer Center, Xiangya Hospital of Central South University, the Second Xiangya Hospital of Central South University, the Southwest Hospital of AMU, Union Hospital Tongji Medical College Huazhong University of Science and Technology, and Shandong Tumor Hospital.

: Not applicable.

: All authors have no competing interest.