title: Common deficiencies in clinical researches of N classifications for gastric cancer.
authors: Cunjun
authors: C
authors: Yu
authors: Wenting
authors: W
authors: He
authors: Ping
authors: P
authors: Liu
mesh_terms: D035843:Biomedical Research / Q000592:standards*; D006801:Humans; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D016016:Proportional Hazards Models; D012107:Research Design / Q000592:standards*; D013274:Stomach Neoplasms / Q000473:pathology*