1 Nuffield Department of Surgical Sciences, University of Oxford, Level 6 John Radcliffe Hospital, Oxford OX3 9DU, UK; Department of Vascular Surgery, University Medical Center Utrecht, PO Box 85500, Utrecht, The Netherlands.
2 Nuffield Department of Surgical Sciences, University of Oxford, Level 6 John Radcliffe Hospital, Oxford OX3 9DU, UK. Electronic address: email@example.com.
3 Department of Vascular Surgery, University Medical Center Utrecht, PO Box 85500, Utrecht, The Netherlands.
4 Clinical Trial Service Unit, Nuffield Department of Population Health, University of Oxford, Richard Doll Building, Old Road Campus, Roosevelt Drive, Oxford OX3 7LF, UK.
5 Department of Surgery, Istituto Auxologico Italiano IRCCS, Via Mercalli 30, 20122 Milan, Italy.
6 Department of Neurology and Stroke Center, University Hospital Basel, CH-4031 Basel, Switzerland.
7 Department of Vascular Surgery, Policlinico di Monza, Via Amati 111, 20900 Monza, Italy.
8 Medical University of Innsbruck, Austria.
9 University Hospital of Antwerp, Belgium.
10 Universitair Ziekenhuis Gent, Belgium.
11 Centre Hospitalier De Mouscron, Belgium.
12 Centre Hospitalier Régional de la Citadelle, Belgium.
13 Cliniques Universitaires St-Luc, Belgium.
14 A.Z St Blasius, Belgium.
15 University of Sao Paulo (HCFMUSP), Brazil.
16 Sveta Marina Hospital, Bulgaria.
17 Foothills Medical Centre, Canada.
18 Peking Union Medical College Hospital, China.
19 University Hospital Merkur, Croatia.
20 Hospital Ceské Budejovice, Czech Republic.
21 St Anne's University Hospital Brno, Czech Republic.
22 Regional Hospital Liberec, Czech Republic.
23 University Hospital Ostrava Poruba, Czech Republic.
24 Central Military Hospital, Czech Republic.
25 Kasr Alaini University Hospital, Egypt.
26 East Tallinn Central Hospital, Estonia.
27 Henri Mondor Hospital, France.
28 St. Joseph Hospital, France.
29 Centre de Consultation Cardiovasculaire, France.