Ethics approval and consent to participate
cancer, Cancer
CANCER, CANCER
We promise that our research was performed in accordance with the Declaration of Helsinki and all methods were carried out in accordance with relevant guidelines and regulations. All experimental protocols were approved by the ethics committee of National Cancer Institute (USA) to obtain research data on cancer patients (reference number 15156-Nov2021). Informed consent was waived by Committee for the Conduct of Human Research at the General Hospital of Ningxia Medical University because the patient information in the SEER database is deidentified and publicly available.