S.Shifa, C.Sofia Tamilarasi, and K.Kamalakannan. “Ki 67 Expression in Breast Carcinoma – Its Relationship With Age of the Patients and Pathological Stage of the Disease”. International Journal of Health and Clinical Research, vol. 5, no. 3, Jan. 2022, pp. 275-9, https://ijhcr.com/index.php/ijhcr/article/view/4380.