Vertebral Artery Hypoplasia and Posterior Circulation Vulnerability: A Systematic Review of Epidemiological, Hemodynamic, and Clinical Evidence - Olja Mirkovic; Milos Stepovic; Jovana Milosavljevic; Maja Vulovic; Ivana Zivanovic-Macuzic; Dejan Aleksic; Milos N. Milosavljevic; Melanija Tepavcevic; Ivona Marinkovic; Simonida Delic; Kristijan Jovanovic; Verica Vukicevic; et al. (Neurology International, 2026)