1. Departments of Radiology, Sotiria Hospital Athens, Greece

2. Department of Radiology, Red Cross Hospital of Athens, Athens, Greece

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

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

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

6. Department of Pathology, Ippokrateio Hospital, Athens, Greece

7. Departments of Radiology, Red Cross Hospital Athens, Greece