1. Institute of Nuclear Medicine, Università Cattolica del Sacro Cuore, Rome, Italy
2. Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, Nuclear Medicine Unit, University of Messina, Messina ME, Italy
3. Department of Nuclear Medicine, Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
4. Department of Nuclear Medicine, University Hospital Zurich/University of Zurich, Raemistrasse 100, 8091 Zurich, Switzerland
5. Executive Committee of the Italian Association of Nuclear Medicine, Milan, Italy