Affiliation: | 1. Department of Neurology, Faculty of Medicine, PJ Safarik University, Kosice, Slovakia;2. Kosice Institute for Society and Health, PJ Safarik University, Kosice, Slovakia;3. Department of Social Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;4. Department of Neurology, Railways Hospital, Kosice, Slovakia;5. Department of Health Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;6. Department of Oral Health and Clinical Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands |