1. Department of Surgery, Royal Glamorgan Hospital, Llantrisant, United Kingdom
2. Department of Pathology, Royal Glamorgan Hospital, Llantrisant, United Kingdom
3. Department of Radiology, Royal Glamorgan Hospital, Llantrisant, United Kingdom
4. NHS Wales Informatics Services, Cardiff, United Kingdom
5. Neurovascular Research Laboratory, Faculty of Health, Science and Sport, University of Glamorgan, Pontypridd, United Kingdom