RT Journal Article SR Electronic T1 Epidural pneumatosis: a benign entity in trauma patients. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 345 OP 345 VO 12 IS 2 A1 S J Willing YR 1991 UL http://www.ajnr.org/content/12/2/345.abstract AB