1. Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School , Boston , MA 02115 , USA
2. Society of Junior Doctors , 15123 Athens , Greece
3. Department of Neurology, St. Josef-Hospital , Ruhr Universität Bochum , 44791 Bochum , Germany
4. 1st Department of Neurology, Eginition Hospital, Medical School , National and Kapodistrian University of Athens , 11528 Athens , Greece
5. Department of Neurology , Tallaght University Hospital (TUH)/The Adelaide and Meath Hospital Dublin, Incorporating the National Children’s Hospital (AMNCH) , Dublin D24 NR0A , Ireland
6. Department of Radiology , Universitätsspital Zürich , 8091 Zürich , Switzerland
7. Department of Health Economics, Policy and Management , Karolinska Institutet , 171 77 Stockholm , Sweden
8. Hull University Teaching Hospitals NHS Trust , Hull HU3 2JZ , UK
9. First Department of Radiology, School of Medicine , National & Kapodistrian University of Athens, Areteion Hospital , 115 28 Athens , Greece
10. Department of Diagnostic and Interventional Neuroradiology , Hospital Bremen-Mitte/Bremen-Ost , 28205 Bremen , Germany