1 Interventional Neuroradiology, Gold Coast University Hospital, Southport, Queensland, Australia permesh.dhillon@nottingham.ac.uk.
2 Interventional Neuroradiology, Queens Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK.
3 Radiological Sciences, Mental Health & Clinical Neuroscience, University of Nottingham, Nottingham, UK.
4 Interventional Neuroradiology, Gold Coast University Hospital, Southport, Queensland, Australia.
5 Department of Medicine and Neurology, Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia.
6 Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia.