Feizal Faturahman, Mulawan Umar, and Theodorus. 2026. “Serum Calcium As a Preoperative Surrogate of Tumour Burden in Stage III Breast Carcinoma: A Cross-Sectional Surgical-Oncology Study”. Sriwijaya Journal of Surgery 9 (1), 156-67. https://doi.org/10.37275/sjs.v9i1.153.