1 South-East Wales Vascular Network, University Hospital of Wales, Cardiff and Vale University Health Board, Cardiff, UK; Gwent Vascular Institute, Aneurin Bevan University Health Board, Newport, UK. Electronic address: Rhiannon.Nielsen@Wales.nhs.uk.
2 South-East Wales Vascular Network, University Hospital of Wales, Cardiff and Vale University Health Board, Cardiff, UK; Gwent Vascular Institute, Aneurin Bevan University Health Board, Newport, UK. Electronic address: https://twitter.com/DaveBosanquet.