Sornthom, W. “Development and Validation of a Clinical Prediction Model for Axillary Lymph Node Metastasis in Patients with an Early-stage Breast Cancer”. Journal of The Department of Medical Services, vol. 49, no. 3, Sept. 2024, pp. 116-25, https://he02.tci-thaijo.org/index.php/JDMS/article/view/266872.