1. Department of Head and Neck Surgery, University Hospital Ghent, Ghent, Belgium
2. Nuclear Medicine Unit, Departments of Clinical Sciences and Radiological Sciences, Second Faculty of Medicine, University “La Sapienza,” Rome, Italy
3. Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
4. Department of Biopathology and Diagnostic Imaging, University “Tor Vergata,” Rome, Italy
5. Departments of Nuclear Medicine, Experimental Cancerology and Radiotherapy, University Hospital Ghent, Ghent, Belgium