5Pang D, Dias MS, Ahab- Barmada M. Split cord malformation: Part I: A unified theory of embryogenesis for double spinal cord malformations[J]. Neurosurgery, 1992, 31(3): 451-480.
6Tsou PM, Yau A, Hodgson AR. Embryogenesis and prenatal de- velopment of congenital vertebral anomalies and their classifica- tion[J]. Clin Orthop Relat Res, 1980, (152): 211-231.
7McMaster MJ. Oceuh iutraspinal anomalies and congenital scolio- sis[J]. J Bone Joint Surg Am, 1984, 66(4): 588-601.
8Shen J, Wang Z, Liu J, et al. Abnormalities associated with con- genital scoliosis: a retrospective study of 226 Chinese surgical cases[J]. Spine (Phila Pa 1976), 2013, 38(10): 814-818. DOI: 10.1097/BRS.0b013 e31827ed 125.
9Liu W, Zheng D, Cui S, et al. Characteristics of osseous septum of split cord malformation in patients presenting with scoliosis: a ret- rospective study of 48 cases [J]. Pediatr Neurosurg, 2009, 45(5): 350-353. DOI: 10.1159/000257523.
10Mahapatra AK, Gupta DK. Split cord malformations: a clinical study of 254 patients and a proposal for a new clinical-imaging classification[J]. J Neurosurg, 2005, 103(6): 531-536.