Implication of perineural invasion in patients with stage II gastric cancer.

"Declarations Ethics approval and consent to participateThis study complies with the standards of the Declaration of Helsinki and current ethical guidelines. The requirement for informed consent for this study was waived, and approval was granted by the Ethical Committee of the Sixth Affiliated Hospital of Sun Yat-Sen University (No. 2021ZSLYEC-325). Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by the National Natural Science Foundation of China (grant nos. 82070684), the Guangdong Natural Science Fund for Outstanding Youth Scholars (grant no. 2020B151502005), the Bethune Aixikang Distinguished Surgical Fund project (grant no.HZB-20190528–5) and the Sixth Affiliated Hospital of Sun Yat-Sen University Clinical Research – ‘1010’ Program (grant no.1010CG (2020)-02)."