1. From the Department of Experimental and Clinical Medicine (C.F., J.M.P., N.P., C.T., C.Po.), University of Florence, Italy
2. European Laboratory for Non-linear Spectroscopy, Sesto Fiorentino, Italy (C.F., D.M., M.C., F.S.P., D.S.W., C.Po., L.S., C.Pa.)
3. Department of Chemistry “Ugo Schiff” (D.M., C.Pa.), University of Florence, Italy
4. National Institute of Optics, National Research Council, Sesto Fiorentino, Italy (D.M., M.C., F.S.P., D.S.W., L.S., C.Pa.)
5. Department of Neurosciences, Psychology, Drug Research and Child Health (NEUROFARBA) (R.C., E.C), University of Florence, Italy
6. Department of Biochemical, Experimental and Clinical “Mario Serio”, Italy (P.P.)
7. Department of Physics and Astronomy (F.S.P., D.S.W.), University of Florence, Italy
8. Istituto Nazionale di Ricerca Metrologica INRiM, Turin, Italy (D.S.W., C.Pa.).