1 Regional Center of Nuclear Medicine, Department of Translational Research and New Technology in Medicine, University of Pisa, and Azienda Ospedaliero Universitaria Pisana, Via Savi 10, 56126, Pisa, Italy. paola.erba@unipi.it.
2 Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Centre, University Medical Center Groningen, Groningen, The Netherlands. paola.erba@unipi.it.
3 Rappaport, Faculty of Medicine Technion, Haifa, Israel.