1. IFOM – The FIRC Institute of Molecular Oncology, Milano, Italy
2. Department of Oncology, Mario Negri Institute for Pharmacological Research, Milano, Italy
3. European Institute of Oncology, Milano, Italy
4. Protein Laboratory, Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen, Copenhagen, Denmark
5. University of Milano School of Medicine, Milano, Italy
6. Present address: European Institute of Oncology, Molecular Medicine Program, Milano, Italy