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 - Zhang, Nannan; Bai, Huihui; Deng, Jingyu; Wang, Wei; Sun, Zhe; Wang, Zhenning; Xu, Huimian; Zhou, Zhiwei; Liang, Han (Annals of Translational Medicine, 2020)