1. Department of Cardiology, National University Heart Centre Singapore, Singapore 119074, Singapore
2. Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
3. Pre-Hospital Emergency Research Center, Duke-NUS Medical School, Singapore 169857, Singapore
4. Centre for Quantitative Medicine, Duke-NUS Medical School, Singapore 169857, Singapore
5. Imperial College Healthcare NHS Trust, London W12 OHS, UK
6. Department of Emergency Medicine, Singapore General Hospital, Singapore 169608, Singapore
7. Health Services and Systems Research, Duke-NUS Medical School, Singapore 169857, Singapore
8. Department of Cardiology, Tan Tock Seng Hospital, Singapore 308433, Singapore
9. Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 639798, Singapore
10. Division of Neurology, National University Health System, Singapore 119074, Singapore
11. Cardiothoracic Intensive Care Unit, National University Heart Centre Singapore, Singapore 119074, Singapore