1. Department of Nuclear Medicine and PET/CT Center (L.G., G.T., L.C.), Oncology Institute of Southern Switzerland, CH-6500 Bellinzona, Switzerland
2. Nuclear Medicine Research Center (R.S.), Mashhad University of Medical Sciences, 91766-99199 Mashhad, Iran
3. Section of Endocrinology and Diabetology (P.T.), Ospedale Israelitico, 00148 Rome, Italy
4. Department of Nuclear Medicine (F.A.V.), Rheinisch-Westfällische Technische Hochschule University Hospital Aachen, 52074 Aachen, Germany