1 Neurointervention and Imaging Services of Western Australia Sir Charles Gairdner Hospital Nedlands, Western Australia.
2 Princess Margaret Hospital Subiaco, Western Australia University College of London Foundation Trust National Hospital for Neurology and Neurosurgery, London London, UK.
3 University College of London Foundation Trust National Hospital for Neurology and Neurosurgery, London London, UK.
4 Neurointervention and Imaging Services of Western Australia Sir Charles Gairdner Hospital Nedlands, Western Australia Princess Margaret Hospital Subiaco, Western Australia.