1. Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou
2. Department of Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University
3. Department of Orthopaedic Surgery, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang
4. Department of Orthopedics, Baodi Clinical College of Tianjin Medical University, Tianjin
5. Department of Spine Surgery, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
6. Center for Musculoskeletal Surgery (CMSC), Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt University of Berlin, Berlin Institute of Health, Berlin, Germany