1. Breast Cancer Group, Department of Medical Oncology, IRCCS San Raffaele Hospital, Milan, Italy
2. Breast Surgery Unit, IRCCS San Raffaele Hospital, Milan, Italy
3. Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
4. Radiotherapy Unit, IRCCS San Raffaele Hospital, Milan, Italy
5. Vita-Salute S. Raffaele University, Milan, Italy
6. Breast Imaging Unit, IRCCS San Raffaele Hospital, Milan, Italy
7. Pathology Unit, IRCCS San Raffaele Hospital, Milan, Italy
8. Department of Medical Oncology, IRCCS San Raffaele Hospital, Milan, Italy