1. Department of Neurosurgery, University Hospital of Larissa, University of Thessaly, School of Medicine, Larissa, Greece
2. Department of Neurology, University Hospital of Larissa, University of Thessaly, School of Medicine, Larissa, Greece
3. Department of Orthopedics, University Hospital of Larissa, University of Thessaly, School of Medicine, Larissa, Greece
4. Department of Medical Imaging, University Hospital of Heraklion, Medical School of Crete, Heraklion, Greece