The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Medicine and Therapeutics, The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care, University of Edinburgh - The Roslin Institute, Shenzhen Center for Disease Control and Prevention, Shenzhen Center for Disease Control and Prevention, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, Southern Medical University - Shenzhen Hospital, Department of Gastroenterology, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, Sun Yat-sen University (SYSU) - School of Public Health, The Chinese University of Hong Kong - Department of Medicine & Therapeutics, The Chinese University of Hong Kong (CUHK) - State Key Laboratory of Digestive Disease, Second Hospital of Tianjin Medical University - Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care and The Chinese University of Hong Kong (CUHK) - Department of Anesthesia and Intensive Care