1. Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Department of OrthopaedicsShaoxing People's HospitalShaoxing Hospital of Zhejiang University Shaoxing China
3. Department of Orthopedic SurgeryBeijing Jishuitan HospitalFourth Clinical College of Peking UniversityJishuitan Orthopaedic College of Tsinghua University Beijing China
4. Department of Anaesthesia and Intensive CareThe Chinese University of Hong Kong Hong Kong China
5. State Key Laboratory of Digestive DiseasesLi Ka Shing Institute of Health SciencesThe Chinese University of Hong Kong Hong Kong China