1 International Breast Cancer Study Group (IBCSG) Coordinating Center, Effingerstrasse 40, 3008, Bern, Switzerland. [email protected].
2 International Breast Cancer Study Group and University of Sydney, Sydney, Australia.
3 International Breast Cancer Study Group, Data Management Center, Amherst, NY, USA.
4 International Breast Cancer Study Group Statistical Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
5 International Breast Cancer Study Group Statistical Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard T.H. Chan School of Public Health, Frontier Science and Technology Research Foundation, Boston, MA, USA.
6 International Breast Cancer Study Group Coordinating Center and Bern University Hospital, Inselspital, Bern, Switzerland.