Correspondence to: Thomas Wälchli, MD, PhD, FMH, Toronto Western Hospital, University Health Network, 60 Leonard Ave, Toronto, Ontario, M5T 2S8, Canada, Email

E-mail Address: [email protected]

E-mail Address: [email protected]

E-mail Address: [email protected]

E-mail Address: [email protected]

https://orcid.org/0000-0002-8961-6551

Group Brain Vasculature and Perivascular Niche, Division of Experimental and Translational Neuroscience, Krembil Brain Institute, Krembil Research Institute, Toronto Western Hospital, University Health Network, University of Toronto, Ontario, Canada (T.W., F.F.).

Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, University of Toronto, Ontario, Canada (T.W., F.F.).

Group of CNS Angiogenesis and Neurovascular Link, Neuroscience Center Zurich, and Division of Neurosurgery, University and University Hospital Zurich, and Swiss Federal Institute of Technology (ETH) Zurich, Switzerland (T.W., F.F.).

Division of Neurosurgery, University Hospital Zurich, Switzerland (T.W., F.F.).