1. Department of Biomedical Science and of Morphological and Functional Images; Nuclear Medicine Unit; University of Messina; Messina Italy
2. Nuclear Medicine and PET/CT Centre; Oncology Institute of Southern Switzerland; Bellinzona Switzerland
3. Department of Economical, Business and Environmental Sciences and Quantitative Methods; University of Messina; Messina Italy
4. Department of Clinical and Experimental Medicine and Pharmacology; Section of Endocrinology; University of Messina; Messina Italy