1. Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza, “Sapienza” University of Rome, Rome Italy
2. Department of Economics & Finance, University of Rome “Tor Vergata”, Rome, Italy
3. Nuclear Medicine Unit, Cardarelli Hospital, Campobasso, Italy
4. Nuclear Medicine Department, University of Bari “Aldo Moro”, Bari, Italy