2Bracken MB,Shepard MD,Holford TR,et al.Administration of methylprednisolone for 24 or 48 hours or tirilazed mesylate for 48 hours in the treatment of acute spinal cord injury[J].JAMA,1997,277(20):1597-1604.
3Pang D,Wilberger JE.Spinal cord injury without radiographic abnormalities in children[J].J Neurosurg,1982,57:114-119.