1. Faculty of Medicine, Riga Stradiņš University, LV-1007 Riga, Latvia
2. Faculty of Residency, Riga Stradiņš University, LV-1007 Riga, Latvia
3. Department of Neurology, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia
4. Department of Neurology and Neurosurgery, Riga Stradiņš University, LV-1007 Riga, Latvia
5. Department of Neurology and Neurosurgery, Riga East University Hospital Clinic “Gaiļezers”, LV-1038 Riga, Latvia
6. Department of Infectology, Riga Stradiņš University, LV-1007 Riga, Latvia