Richard M Bresler1, Noel P Lynch2, Mary Connolly3, Stephen Keelan3, Louis Richter4, Seamus M McHugh3, Peter A Naughton5. 1. Royal College Surgeons of Ireland, 123 St. Stephens' Green, Dublin 2, Dublin, Ireland; Department of Vascular Surgery, Beaumont Hospital, Dublin, Ireland. Electronic address: richardbresler@rcsi.com. 2. Royal College Surgeons of Ireland, 123 St. Stephens' Green, Dublin 2, Dublin, Ireland; Department of Vascular Surgery, Beaumont Hospital, Dublin, Ireland. Electronic address: noellynch@rcsi.ie. 3. Royal College Surgeons of Ireland, 123 St. Stephens' Green, Dublin 2, Dublin, Ireland; Department of Vascular Surgery, Beaumont Hospital, Dublin, Ireland. 4. Royal College Surgeons of Ireland, 123 St. Stephens' Green, Dublin 2, Dublin, Ireland. Electronic address: louisrichter@rcsi.com. 5. Royal College Surgeons of Ireland, 123 St. Stephens' Green, Dublin 2, Dublin, Ireland; Department of Vascular Surgery, Beaumont Hospital, Dublin, Ireland. Electronic address: Pnaughton@rcsi.ie.