1. Department of Neurology, Faculty of Medical Sciences, Medical University of Warsaw, Warsaw, Poland
2. Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
3. Department of Neurology, Stroke, and Neurorehabilitation, Medical University of Lodz, Lodz, Poland
4. Department of Neurology, Military Institute of Medicine, Warsaw, Poland
5. Health Institute, Neurology and Restorative Medicine, Oswiecim, Poland