1. Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, China
2. Clinical Medicine Eight-Year Program, Central South University, Changsha 410013, Hunan Province, China
3. Department of Internal Medicine III, University Hospital, Ludwig Maximilian University, Munich 81377, Germany
4. Department of Orthopedics, Chenzhou No.1 People's Hospital, Chenzhou 423000, Hunan, China
5. Department of Cardiology, The Fourth Hospital of Changsha, Changsha 410006, Hunan, China
6. Department of Orthopedics, The First People's Hospital of Changde City, Changde 415003, Hunan, China
7. Department of Emergency, The First Hospital of Changsha, Changsha 410005, Hunan, China