Impact of examined lymph node count on staging and long-term survival of patients with node-negative stage III gastric cancer: a retrospective study using a Chinese multi-institutional registry with Surveillance, Epidemiology, and End Results (SEER) data validation

Nannan Zhang, Huihui Bai, Jingyu Deng, Wei Wang, Zhe Sun, Zhenning Wang, Huimian Xu, Zhiwei Zhou, Han Liang