1. Yong Loo Lin School of Medicine; National University Health System; Singapore
2. Department of Emergency Medicine; Singapore General Hospital; Singapore
3. Office of Clinical Sciences; Duke-NUS Graduate Medical School; Singapore
4. Accident and Emergency Department; Changi General Hospital; Singapore
5. Department of Cardiology; Tan Tock Seng Hospital; Singapore
6. Emergency Medicine Department; National University Hospital; Singapore
7. Department of Acute and Emergency Care; Khoo Teck Puat Hospital; Singapore
8. Medical Department; Singapore Civil Defence Force; Singapore
9. Children's Emergency; KK Women's and Children's Hospital; Singapore
10. Emergency Medicine Department; Alexandra Hospital; Singapore
11. Department of Statistics; University of Rajshahi; Bangladesh