Improvement in Fatigue during Natalizumab Treatment is Linked to Improvement in Depression and Day-Time Sleepiness. Penner I-K, Sivertsdotter E C, Celius EG, Fuchs S, Schreiber K, Berkö S, Svenningsson A, TYNERGY trial investigators Front Neurol. 2015; 6:18. Epub 2015 Feb 23. PMID: 25755648. Abstract CommentRecommendBookmarkWatch