Wu, Y., Mittendorf, E., Kelten, C., Tucker, S., Wei, W., Middleton, L., Broglio, K., Buchholz, T., Hunt, K. & Sahin, A. (2012) Occult axillary lymph node metastases do not have prognostic significance in early stage breast cancer. CANCER , 118(6), 1507-1514.