1. Department of Bioimaging and Radiological Sciences, Institute of Nuclear Medicine, Catholic University of the Sacred Heart, Largo Agostino Gemelli 8, 00168 Rome, Italy
2. Department of Nuclear Medicine and PET Center, Oncology Institute of Southern Switzerland, via Ospedale 12, 6500 Bellinzona, Switzerland
3. School of Medicine, Catholic University of the Sacred Heart, Largo Agostino Gemelli 8, 00168 Rome, Italy