1. Medical School, University of Western Australia, Perth, WA, Australia; and WA Centre for Health & Ageing, University of Western Australia, Perth, WA, Australia
2. Medical School, University of Western Australia, Perth, WA, Australia; and Department of Neurology, Sir Charles Gairdner Hospital, Perth, WA, Australia
3. Medical School, University of Western Australia, Perth, WA, Australia; and Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, WA, Australia
4. Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia; and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia
5. Deakin Health Economics, Deakin University, Geelong, VIC, Australia