1. São Paulo State University, São Paulo, Brazil
2. Mir@cl Laboratory, Sfax, Tunisia
3. Université Clermont Auvergne, Clermont-Ferrand, France
4. Department of Physics & Biophysics, Botucatu, São Paulo, Brazil
5. Institut Pascal, Clermont-Ferrand, France
6. Institut Pascal / CHU, Clermont-Ferrand, France