1. Nuclear Medicine Unit, S. Andrea Hospital, 19127 La Spezia, Italy
2. Nuclear Medicine Unit, P.O. Spirito Santo, 65124 Pescara, Italy
3. Nuclear Medicine Unit, Macerata Hospital, AST, 62100 Macerata, Italy
4. Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
5. Department of Health Sciences (DISSAL), University of Genoa, 16132 Genova, Italy
6. Department of Breast Imaging and Emergency Radiology, San Salvatore Hospital, 67100 L’Aquila, Italy
7. Radiology Unit, Macerata Hospital, AST, 62100 Macerata, Italy
8. Nuclear Medicine Unit, St. Salvatore Hospital, 67100 L’Aquila, Italy
9. Nuclear Medicine Unit, Cardarelli Hospital, 86100 Campobasso, Italy