1. Faculty of Residency, Riga Stradins University, LV-1007 Riga, Latvia
2. Neurology Department, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia
3. Institute of Diagnostic Radiology, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia
4. Department of Neurology and Neurosurgery, Riga Stradins University, LV-1007 Riga, Latvia
5. The Red Cross Medical College, Riga Stradins University, LV-1007 Riga, Latvia
6. Department of Vascular Surgery, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia