Oladuti, Olubimpe M., and Paul O. Olopha. “Comparison of Survival Estimation Methods in the Analysis of Breast Cancer Data”. Asian Pacific Journal of Cancer Care 7, no. 4 (October 15, 2022): 601–605. Accessed May 29, 2026. http://www.waocp.com/journal/index.php/apjcc/article/view/865.