1. Division of Vascular Surgery, Department of Surgery, Stanford University School of Medicine, CA (T.A., N.J.L.).
2. Cardiothoracic and Vascular Health, Kolling Institute and Department of Cardiology, Royal North Shore Hospital, Northern Sydney Local Health District, Australia (B.A.D.B., G.A.F.).
3. Centenary Institute, Sydney, Australia (J.M.).