Correspondence to: Thomas Gattringer, MD, PhD, Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, A-8036 Graz, Austria, Email

E-mail Address: [email protected]

https://orcid.org/0000-0002-6065-6576

Department of Neurology, Medical University of Graz, Austria (B.P., M.B., F.F., T.G.).

Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Austria (T.G.).