Site of primary tumor has a prognostic role in operable breast cancer: The International Breast Cancer Study Group experience

Marco Colleoni, David Zahrieh, Richard D. Gelber, Stig B. Holmberg, Jan E. Mattsson, Carl Magnus Rudenstam, Jurij Lindtner, Darja Eržen, Raymond Snyder, John Collins, Martin F. Fey, Beat Thürlimann, Diana Crivellari, Elizabeth Murray, Caesar Mendiola, Olivia Pagani, Monica Castiglione-Gertsch, Alan S. Coates, Karen Price, Aron Goldhirsch