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1 Clinical Effectiveness Unit, Royal College of Surgeons of England, London, UK; Hull York Medical School, Hull, UK. Electronic address: eleanor.atkins@nhs.net.
2 Clinical Effectiveness Unit, Royal College of Surgeons of England, London, UK; Hull York Medical School, Hull, UK.
3 Lyme Building, Royal Stoke University Hospital, Stoke-on-Trent, UK.
4 Division of Vascular Surgery, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.
5 Cambridge Vascular Unit, Cambridge University Hospitals NHS Trust, Cambridge, UK.
1 Clinical Effectiveness Unit, Royal College of Surgeons of England, London, UK; Hull York Medical School, Hull, UK. Electronic address: eleanor.atkins@nhs.net.
2 Clinical Effectiveness Unit, Royal College of Surgeons of England, London, UK; Hull York Medical School, Hull, UK.
3 Lyme Building, Royal Stoke University Hospital, Stoke-on-Trent, UK.
4 Division of Vascular Surgery, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.
5 Cambridge Vascular Unit, Cambridge University Hospitals NHS Trust, Cambridge, UK.