1. Division of Vascular Surgery and Endovascular Therapy, University of Florida College of Medicine, Gainesville (S.T.S.).
2. Division of Vascular Surgery and Endovascular Therapy, University of Alabama at Birmingham (A.B.).
3. Healthcare Policy and Research, Weill Cornell Medical College, New York, NY (A.S., J.M.).
4. Department of Vascular Surgery, Helsinki University Hospital, Finland (M.V.).
5. Division of Vascular Surgery, University of Minnesota, Minneapolis (R.F.).
6. Division of Vascular Surgery and Endovascular Therapy, Beth Israel Deaconess Medical Center, Boston, MA (M.S.).
7. Australasian Vascular Audit, Australasian Society for Vascular Surgery, Melbourne, Australia (B.B.).
8. Department of Vascular Surgery, Semmelweis University, Budapest, Hungary (Z.S.).
9. Department of Cardio-Thoracic and vascular Surgery, Aarhus University Hospital Skejby, Denmark (N.E.).
10. Department of Surgery, University of Otago, Dunedin, New Zealand (I.T.).
11. Department of Surgery, Faculty of Medicine and Surgery, University of Malta (K.C.).
12. Department of Vascular Surgery, St Olavs Hospital, Trondheim, Norway (M.A.).
13. Department of Vascular Medicine, Working Group GermanVasc, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (C.-A.B., S.D.).
14. Division of Vascular and Endovascular Surgery, Addenbrooke’s Hospital, Cambridge University Hospital Trust, United Kingdom (J.R.B.).
15. Clinical Effectiveness Unit, Royal College of Surgeons of England, London, United Kingdom (A.J.).
16. Department of Surgical Sciences, Uppsala University, Sweden (M.B., K.M.).
17. Section of Vascular Surgery, Dartmouth-Hitchcock Medical Center, Lebanon, NH (J.C.).