1. Gabriele Monasterio Foundation, Pisa, Italy
2. Institute of Clinical Physiology, CNR, Pisa, Italy
3. P.O. “Giovanni Paolo II”, Lamezia Terme, Italy
4. Ospedale Civico, Palermo, Italy
5. P. O. ASL 5, Crotone, Italy
6. U.O. Polyclinic G. Martino, Messina, Italy
7. Policlinico Umberto I, Roma, Italy
8. Ospedale “Sant'Eugenio”, Roma, Italy
9. P.O. Pediatrico Microcitemico “A.CAO”, Cagliari, Italy
10. Azienda Ospedaliera Civile - O.M.P.A. Ragusa, Ragusa, Italy
11. Santa Maria Nuova Hospital, Reggio Emilia, Italy
12. Ospedale “Engles Profili”, Fabriano, Italy