1. Neurovascular Research Laboratory, Alfred Russel Wallace Building, Faculty of Life Sciences and Education University of South Wales Pontypridd CF37 4AT UK
2. Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, Faculty of Health and Social Development University of British Columbia Kelowna BC Canada
3. Department of Biomedical Sciences, Faculty of Health Sciences University of Copenhagen Copenhagen Denmark
4. Institute for Neuroradiology, University Hospital Ludwig‐Maximilians‐University Munich Munich Germany