1. Departments of Biomedical Sciences and Oncology (M.P., P.C.), Turin, 10125 Italy
2. Anatomy, Pharmacology and Forensic Medicine (C.G., F.C., G.M.), Turin, 10125 Italy
3. Europeptides (R.D.), Argenteuil 95108, France
4. Internal Medicine (E.G.), University of Turin, Turin, 10125 Italy