Funding: the study was ordered by the Research Center of Neurology (Federal Research Institution).

Author contribution: Tanashyan MM — study design development, manuscript editing; Medvedev RB — literature analysis, study design development, data collection, analysis and interpretation, manuscript authoring; Lagoda OV and Berdnikovich ES — literature analysis, study design development, data collection and interpretation, manuscript editing; Skrylev SI — angiosurgery, manuscript editing; Gemdzhian EG — study concept and design, data analysis, statistical analysis, manuscript compilation and editing; Krotenkova MV — image data analysis and interpretation, manuscript editing.