RT Journal Article SR Electronic T1 Neurosurgery—The Scientific Basis of Clinical Practice ed by Alan Crockard, Richard Hayward, and Julian T. Hoff JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 61 OP 61 VO 54 IS 1 A1 Joseph F. Hahn YR 1987 UL http://www.ccjm.org/content/54/1/61.2.abstract AB