1. Department of Physics, University of Pisa, Pisa, Italy, --- Select a Country ---
2. INFN, Pisa Section, Pisa, Italy, --- Select a Country ---
3. INFN, Napoli Section, Napoli, Italy, --- Select a Country ---
4. Università di Napoli Federico II, Dipartimento di Fisica “Ettore Pancini”, Napoli, Italy, --- Select a Country ---
5. Unit of Medical Physics, Pisa University Hospital “Azienda Ospedaliero-Universitaria Pisana”, Pisa, Italy, --- Select a Country ---