1 Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, People's Republic of China.
2 National Center for Birth Defect Monitoring, West China Second University Hospital, Sichuan University and Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, 610041, China.
3 Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, People's Republic of China.
4 Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, People's Republic of China. [email protected].
5 Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, People's Republic of China. [email protected].