RT Journal Article SR Electronic T1 Dr. Sivak et al reply.—Postoperative ventilatory dependency following thymectomy for myasthenia gravis JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 116 OP 116 VO 53 IS 1 A1 Edward D. Sivak A1 Daniel Grum A1 Atul Mehta A1 Maurice Hanson A1 Delos M. Cosgrove YR 1986 UL http://www.ccjm.org/content/53/1/116.abstract AB