1. Unit of Minimally Invasive and Robotic Urologic Surgery and Kidney Transplantation, Careggi University Hospital, Florence, Italy
2. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
3. European Laboratory for Non-Linear Spectroscopy, University of Florence, Sesto Fiorentino, Italy
4. National Institute of Optics, National Research Council, Sesto Fiorentino, Italy
5. Division of Pathological Anatomy, Department of Clinical and Experimental Medicine, University of Florence, Florence, Italy
6. Department of Physics and Astronomy, University of Florence, Sesto Fiorentino, Italy