1. The Breakthrough Breast Cancer Research Centre The Institute of Cancer Research London UK
2. Department of Molecular Pathology The Institute of Cancer Research London UK
3. Department of Medical Sciences University of Turin Turin Italy
4. Department of Pathology Memorial Sloan Kettering Cancer Center New York NY USA
5. Institut Curie Department of Tumour Biology 26 Rue d'Ulm 75248 Paris Cédex 05 France
6. INSERM U934 26 Rue d'Ulm 75248 Paris Cédex 05 France