1. Department of Neurosurgery, University Hospital of Crete, Heraklion 71500, Greece
2. Department of Orthopaedics and Traumatology, ‘251’ Hellenic Air Force General Hospital of Athens, Athens 11525, Greece
3. Department of Pathology, General Hospital of Chania, Chania 73300, Greece
4. Department of Internal Medicine, University Hospital of Crete, Heraklion 71500, Greece
5. Department of Orthopaedics and Trauma, Venizeleion General Hospital of Heraklion, Heraklion 71409, Greece