1. From the Stroke Center and Department of Neurology (J.F., U.F.), University Hospital Basel and University of Basel; University Institute of Diagnostic and Interventional Neuroradiology (J.K., J.G.), and Department of Neurology (T.R.M., U.F.), Inselspital, Bern University Hospital and University of Bern; CTU Bern (L.B.), University of Bern, Switzerland; Department of Neurology (D.S.), Helsinki University Hospital, University of Helsinki, Finland; Department of Neuroradiology (O.F.E.), Hospices Civils...