Van der Laat, Alicia, Allan Ramos-Esquivel, and Denis Landaverde. 2018. “Neoadjuvant Metformin Added to Systemic Therapy Increases Pathological Complete Response in Breast Cancer: A Cross-Sectional Study, Mexico Hospital, Costa Rica”. Archives of Breast Cancer 5 (1), 32-37. https://doi.org/10.19187/abc.20185132-37.