1. Department of Neurology, Laboratory of Neurogenetics, University Hospital of Larissa, University of Thessaly, Larissa, Greece
2. Medical School, University of Cyprus, Nicosia, Cyprus
3. Multiple Sclerosis Center, 2nd Department of Neurology, AHEPA University HospitalThessaloniki, Thessaloniki, Greece
4. Department of Radiology, University of Thessaly, School of Medicine, Larissa, Greece
5. Department of Neurology, Medical School, University of Cyprus, Nicosia, Cyprus