1. Vascular Surgery Department, Larissa University Hospital, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
2. Department of Neurosurgery, Faculty of Medicine, School of Health Sciences, University Hospital of Larissa, University of Thessaly, Larissa, Greece
3. Department of Vascular and Endovascular Surgery, Paracelsus Medical University, Nuremberg, Germany