1. Department of Radiology, Hippokration General Hospital of Athens, Athens, Greece

2. Departments of Radiology, Alexandra General Hospital Athens, Greece

3. Departments of Radiology, Alexandra General Hospital Athens, Greece

4. Department of Radiology, Ag. Olga General Hospital of Athens, Athens, Greece

5. Department of Nuclear Medicine, University Hospital of Ioannina, Athens, Greece

6. Departments of Radiology, IASO General Hospital Athens, Greece

7. Departments of Nuclear Medicine, Alexandra University Hospital of Athens, Athens, Greece