1. Department of Orthopaedic Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. BEIJING HURWA‐ROBOT Medical Technology Co. Ltd Beijing China
3. Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute The Chinese University of Hong Kong Hong Kong
4. State Key Laboratory of Digestive Diseases Centre for Gut Microbiota Research Institute of Digestive Diseases and LKS Institute of Health Sciences The Chinese University of Hong Kong Hong Kong