title: Identifying the minimum number of lymph nodes required to ensure adequate pN staging: Kaplan-Meier survival analysis versus Cox regression model.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Sun
authors.forename: Hui-mian
authors.initials: HM
authors.lastname: Xu
mesh_terms: D016009:Chi-Square Distribution; D006801:Humans; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000473:pathology*; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D012004:Rectal Neoplasms / Q000401:mortality* / Q000473:pathology*; D012307:Risk Factors; D016019:Survival Analysis