RT Journal A1 Zimmerman, Ryan M. A1 Kebaish, Khaled M. T1 Intracranial Hemorrhage Following Incidental Durotomy During Spinal SurgeryA Report of Four Patients JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2007 FD October 1 VO 89 IS 10 SP 2275 OP 2279 DO 10.2106/JBJS.F.01550 UL http://dx.doi.org/10.2106/JBJS.F.01550 AB