1. Faculty of Medicine, The University of New South Wales, Kensington, NSW, Australia
2. Dermatology, Phlebology and Fluid Mechanics Research Laboratory, St Vincent’s Centre for Applied Medical Research (AMR), St Vincent’s Hospital, Sydney, NSW, Australia
3. Department of Dermatology, St Vincent’s Hospital, Sydney, NSW, Australia
4. Department of Vascular Surgery, Imperial College & Imperial Healthcare NHS Trust, London, UK
5. Division of Vascular and Endovascular Surgery, Mayo Clinic, Rochester, MN, USA
6. Department of Surgery, University of Washington, Seattle, WA, USA