1. Mario Negri Institute for Pharmacological Research IRCCS; Via La Masa, 19 Milan Italy 20156
2. Institut Jules Bordet, and l'Université Libre de Bruxelles (U.L.B.); BrEAST Data Centre, Department of Medicine; Brussels Belgium
3. U.O. Oncologia Medica 2, IRCCS AOU San Martino - IST; Department of Medical Oncology; Genova Italy
4. Mario Negri Institute for Pharmacological Research; Italian Cochrane Centre; Via La Masa, 19 Milan Italy 20156