RT Journal Article SR Electronic T1 Myasthenia gravis JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 144 OP 145 DO 10.3949/ccjm.81c.03003 VO 81 IS 3 A1 Keiter, Mary Beth YR 2014 UL http://www.ccjm.org/content/81/3/144.abstract AB