RT Journal Article SR Electronic T1 Unilateral mastoid hypertrophy. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 196 OP 197 VO 3 IS 2 A1 Parks, R E YR 1982 UL http://www.ajnr.org/content/3/2/196.abstract AB