1. Department of Oncology, Mario Negri Institute for Pharmacological Research, Bergamo, Italy
2. Department of Biomedical Sciences and Biotechnology, School of Medicine, University of Brescia, Brescia, Italy
3. Istituto per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche, Milan, Italy
4. Istituto di Chimica del Riconoscimento Molecolare, Consiglio Nazionale delle Ricerche, Milan, Italy