1. Dept. Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
2. Dept. Chemistry and Industrial Chemistry University of Pisa Via Moruzzi 13 56124 Pisa Italy
3. Laboratory of Metals in Medicine Dept. Chemistry University of Florence Via della Lastruccia 3 50019 Sesto Fiorentino, Florence Italy
4. Dept. Medicine Dept. Chemistry University of Padova Via Giustiniani 2 35128 Padova Italy