Survival Analysis of Triple Negative Breast Cancer Patients Based on Ki-67 Protein Expression in Prof. Dr. I.G.N.G Ngoerah General Hospital Denpasar I Gede Made Dwi Arya Pramaharta1*, Ni Gusti Ayu Agung Manik Yuniawaty Wetan2, and Putu Anda Tusta Adiputra2 Abstract Aim: To prove that 2-year mortality of triple-negative breast cancer