1. Holdsworth P . Fractures, dislocations and fracture dislocations of the spine. J Bone Joint Surg 1970: 52A: 1534–1551.
2. Stauffer S . Diagnosis and prognosis of acute cervical spinal cord injury. Clin Ortho Rel Res 1975: 112: 9–15.
3. Klose K J, Green B A, Smith R S, Adkins R H, MacDonald A M . University of Miami Neuro-Spinal Index (UMNI): A quantitative method for determining spinal cord function. Paraplegia 1980: 18: 331–336.
4. American Spinal Injury Association: Standards for Neurological Classification of Spinal Injury Patients. Revised April 1990.