Sjöström-mattson, Johanna, et al. “The Expression of p53, Bcl-2, Bax, Fas and FasL in the Primary Tumour and Lymph Node Metastases of Breast Cancer”. Acta Oncologica, vol. 48, no. 8, Jan. 2009, pp. 1137-43, doi:10.3109/02841860902988688.