Therapeutic Plasma Exchange in Glucocorticosteroid-Unresponsive Patients With Clinically Isolated Syndrome. Ehler J, Koball S, Sauer M, Hickstein H, Mitzner S, Benecke R, Zettl UK Ther Apher Dial. 2014 Mar 27. PMID: 24674271. Abstract CommentRecommendBookmarkWatch