RT Journal Article SR Electronic T1 Therapeutic problems with transsphenoidal pituitary surgery for Cushing’s disease JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 199 OP 207 VO 49 IS 4 A1 Nolan, Patrick M. A1 Sheeler, Leslie R. A1 Hahn, Joseph F. A1 Hardy, Russell W. YR 1982 UL http://www.ccjm.org/content/49/4/199.abstract AB