Letter to the Editor: "The development and validation of a risk stratification system for assessing axillary status after neoadjuvant therapy in node-positive breast cancer: a multicenter, prospective, observational study"

致编辑的信：“新辅助治疗后腋窝淋巴结阳性乳腺癌患者腋窝状况评估风险分层系统的开发与验证：一项多中心、前瞻性、观察性研究”