Umar, M., Aulia Muhardi and Erial Bahar 2021. Relationship of Expression Ki67 Pre Neoadjuvant Chemoterapy with Prognosis in Stadium IIIB Breast Cancer Patients that Performed Mastectomy Surgery at Dr. Mohammad Hoesin Hospital Palembang. Sriwijaya Journal of Surgery. 5, 1 (Nov. 2021), 453-461. DOI:https://doi.org/10.37275/sjs.v5i1.69.