1. Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia
2. Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
3. Department of Vascular and Endovascular Surgery, Townsville Hospital, Townsville, Queensland, Australia
4. Department of Vascular and Endovascular Surgery, Mater Hospital, Townsville, Queensland, Australia
5. School of Medicine, University of Queensland, Brisbane, Queensland, Australia
6. Department of Vascular and Endovascular Surgery, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia
7. Nuffield Department of Population Health, University of Oxford, Oxford, UK