1. Yong Loo Lin School of Medicine, National University of Singapore, Singapore
2. Department of Emergency Medicine, Singapore General Hospital, Singapore
3. Division of Neurology, Department of Medicine, National University Hospital, Singapore
4. Department of Preventive and Population Medicine, Tan Tock Seng Hospital, Singapore
5. Ministry of Home Affairs, Singapore Civil Defence Force, Singapore
6. Emergency Medical Services Department, Singapore Civil Defence Force, Singapore
7. Raffles Neuroscience Centre, Raffles Hospital, Singapore
8. Pre-Hospital and Emergency Research Centre, Duke-National University of Singapore Medical School, Singapore