1. Northern Vascular Centre, Freeman Hospital, The Newcastle upon Tyne NHS Hospitals Foundation Trust, Newcastle upon Tyne, United Kingdom
2. Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
3. Northern Medical Physics and Clinical Engineering, Freeman Hospital, The Newcastle upon Tyne NHS Hospitals Foundation Trust, Newcastle upon Tyne, United Kingdom
4. Newcastle Joint Research Office, Gosforth, Newcastle upon Tyne, United Kingdom