[1] University of Messina,Nuclear Medicine Unit, Department of Biomedical and Dental Sciences and Morpho
[2] University of Messina,Functional Imaging
[3] Nuclear Medicine Unit,Unit of Endocrinology, Department of Clinical and Experimental Medicine
[4] University of Messina,Service Department Macerata Hospital, ASUR Marche AV3
[5] Ente Ospedaliero Cantonale,Unit of Statistical and Mathematical Sciences, Department of Economics
[6] University Hospital and University of Zurich,Clinic for Nuclear Medicine and Competence Centre for Thyroid Diseases, Imaging Institute of Southern Switzerland