1. Department of Emergency Medicine (ZL), Singapore General Hospital; Inpatient Operations (MQL), Changi General Hospital; Office of Clinical Informatics (NL), Woodlands Health; Division of Anaesthesiology and Peiroperative Medicine (MMT, W-LRL); Department of Neuroradiology (SCPW, GSC); Department of Neurology (JSC, YHP), Singapore General Hospital; and Center for Quantitative Medicine (SES), Duke-NUS Medical School, Singapore.