[1] St Georges Univ London, Dept Radiol, London, England
[2] St Georges Univ Hosp NHS Fdn Trust, London, England
[3] Sheffield Teaching Hosp, Sheffield Vasc Inst, Dept Intervent Radiol, Sheffield, S Yorkshire, England
[4] Imperial Coll Healthcare NHS Trust, Dept Intervent Radiol, London, England
[5] Oxford Univ Hosp, Dept Intervent Radiol, Oxford, England
[6] Freeman Rd Hosp, Dept Intervent Radiol, Newcastle, England
[7] Queen Elizabeth Univ Hosp, Greater Glasgow & Clyde NHS, Dept Intervent Radiol, Glasgow, Lanark, Scotland
[8] Univ Hosp Sussex, Dept Intervent Radiol, Brighton, E Sussex, England
[9] Brighton & Sussex Med Sch, Brighton, E Sussex, England
[10] Univ Hosp Birmingham, Birmingham & Womens NHS Trust, Dept Intervent Radiol, Birmingham, W Midlands, England