Incorporating ultrasound-based lymph node staging significantly improves the performance of a clinical nomogram for predicting preoperative axillary lymph node metastasis in breast cancer. Biomol Biomed [Internet]. 2023 Jul. 3 [cited 2024 May 4];23(4):680–688. Available from: https://www.bjbms.org/ojs/index.php/bjbms/article/view/8564