1. Department of Spinal Surgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China (mainland)
2. Department of Orthopedic Surgery, Suzhou Municipal Hospital, Suzhou, Jiangsu, China (mainland)
3. Department of Orthopedic Surgery, Fuyang Sixth People’s Hospital, Fuyang, Anhui, China (mainland)