Affiliation: | 1. Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China;2. Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong;3. Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong;4. State Key Laboratory of Digestive Disease and LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong |