RT Journal Article SR Electronic T1 Eosinophilic Granuloma, Bilateral Mastoid Involvement JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 87 OP 89 VO 19 IS 2 A1 Harris, Harold E. A1 Spencer, David M. YR 1952 UL http://www.ccjm.org/content/19/2/87.abstract AB