1. Department of Anaesthesia; Pamela Youde Nethersole Eastern Hospital; Hong Kong Special Administrative Region; Hong Kong China
2. Department of Adult Intensive Care Unit; Queen Mary Hospital; Hong Kong Special Administrative Region; Hong Kong China
3. Department of Anaesthesiology; Queen Mary Hospital; Hong Kong Special Administrative Region; Hong Kong China
4. Department of Anaesthesiology; The University of Hong Kong; Hong Kong Special Administrative Region; Hong Kong China