Lestari, M.A. and Ifora, I. 2026. In Vitro Anticancer Efficacy of Metformin Combination Therapy in Breast Cancer: A Systematic Review. International Journal of Pharmaceutical and Bio Medical Science. 6, 06 (Jun. 2026), 1101–1110. DOI:https://doi.org/10.47191/ijpbms/v6-i6-06.