1. Department of Medicine; University of Otago; Dunedin New Zealand
2. HeartOtago; University of Otago; Dunedin New Zealand
3. Cardiovascular Systems Laboratory; University of Otago; Wellington New Zealand
4. Department of Physiology; University of Otago; Dunedin New Zealand
5. Department of Health Professions; Faculty of Medicine and Health Sciences; Macquarie University New South Wales Australia