1. Nursing Department, University Hospital of Heraklion, University of Crete, 70013 Heraklion, Greece
2. Department of Social and Family Medicine, University of Crete, 70013 Heraklion, Greece
3. Department of Orthopaedics and Traumatology, University Hospital of Heraklion, University of Crete, 71110 Heraklion, Greece
4. Department of Neurosurgery, School of Medicine, University of Crete, 70013 Heraklion, Greece
5. Division of Psychiatry and Behavioral Science, School of Medicine, University of Crete, 70013 Heraklion, Greece