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 Sivak, Edward D. A1 Grum, Daniel A1 Mehta, Atul A1 Hanson, Maurice A1 Cosgrove, Delos M. YR 1986 UL http://www.ccjm.org/content/53/1/116.abstract AB