Potential prognostic value of the lymph node ratio and its correlation with circulating sex hormone concentration in pathological T1/2 breast cancer patients: a retrospective study - Zhu, Wangyu; Qiu, Xia; Lin, Nawa; Fang, Kexin; Zhang, Tinglei; Ishii, Naohiro; Rozen, Warren Matthew; Hamidian Jahromi, Alireza; Huang, Jian (Annals of Translational Medicine, 2022)