1. Department of Nuclear Medicine and Thyroid Centre; Oncology Institute of Southern Switzerland; Bellinzona Switzerland
2. Department of Clinical Chemistry and Laboratory Medicine; Ente Ospedaliero Cantonale; Bellinzona Switzerland
3. Department of Nuclear Medicine; Ente Ospedaliero “Ospedali Galliera”; Genova Italy
4. Department of Biomedical and Dental Science and Morpho-Functional Images; Nuclear Medicine Unit; University of Messina; Messina Italy
5. Department of Internal Medicine and Endocrinology; University of Torino; Torino Italy
6. Department of Clinical and Experimental Medicine; Endocrinology Unit; University of Messina; Messina Italy