1. National University of Singapore, Yong Loo Lin School of Medicine Singapore
2. Department of AnaesthesiaNational University Health System Singapore
3. Cardiovascular Research Institute, National University Health System Singapore
4. Department of Medicine, Yong Loo Lin School of MedicineNational University of Singapore Singapore
5. Department of Mathematics and Statistics, College of Science, Health and EngineeringLa Trobe University Melbourne Victoria Australia
6. Department of AnesthesiologySingaporeomm General Hospital Singapore