1. Department of Spine and Osteopathic Surgery, The First Affiliated Hospital of Hainan Medical University, Hai-kou, China;
2. Department of Orthopaedics and Traumatology, S. H. Ho Scoliosis Research Laboratory, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China;
3. Joint Scoliosis Research Center of The Chinese University of Hong Kong–Nanjing University, The Chinese University of Hong Kong, Hong Kong, China;
4. Spine Surgery, Nanjing Drum Tower Hospital, Nanjing University, Nanjing, China;
5. Department of Biomedical Sciences, Texas A&M College of Dentistry, Dallas, Texas, USA