Sanguinetti, Alessandro, et al. “Metaplastic Carcinoms of the Breast. Treatment, Results and Prognostic Factors Based on International Literature”. Annali Italiani Di Chirurgia, vol. 85, no. 2, Mar. 2014, pp. 109-13, https://annaliitalianidichirurgia.it/index.php/aic/article/view/266.