7Lawton MT, Porter RW, Heiserman JE, et al. Surgical management of spinal epidural hematoma:relationship be- tween surgical timing and neurological outcome [J]. J Neurosurg,1995,83(1) :1-7.
8Greon RJ, van Alphen HA. Operative treatment of spon- taneous spinal epidural hematoma, a study of the factors determining postoperative outcome [J ]. Neurosurgery, 1996,39(3) :494-508.