B, C., Sampepajung, D., Prihantono, P., Nelwan, B., & Bahar, B. (2016). Relation Expression of Eestrogen Reseptor and Ki67 in Invasive Ductal Carcinoma Breast Cancer. International Journal of Sciences: Basic and Applied Research (IJSBAR), 30(5), 106–113. Retrieved from https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/6680