1. Badacz R, Przewłocki T, Karch I et al (2015) Low prevalence of collateral cerebral circulation in the circle of Willis in patients with severe carotid artery stenosis and recent ischemic stroke. PostepKardiol Inter 11:312–317
2. Banga PV, Varga A, Csobay-Novák C et al (2018) Incomplete circle of Willis is associated with a higher incidence of neurologic events during carotid eversion endarterectomy without shunting. J VascSurg 68:1764–1771
3. Bost RB, Hendrikse J, Algra A et al (2014) Effects of carotid endarterectomy or stenting on arterial diameters in the circle of Willis. J Stroke Cerebrovasc Dis 23:699–705
4. Cui Y, Xu T, Chen J, Tian H, Cao H (2015) Anatomic variations in the anterior circulation of the circle of Willis in cadaveric human brains. Int J ClinExp Med 8:15010–15015
5. de Borst GJ, Moll FL (2013) Status of the circle of Willis and intolerance to carotid cross-clamping. Eur J VascEndovascSurg 45:113