Editors' Pick What Explains Gray Matter Atrophy in Long-standing Multiple Sclerosis? Steenwijk MD, Daams M, Pouwels PJW, Balk LJ, Tewarie PK, Killestein J, Uitdehaag B M, Geurts JJG, Barkhof F, Vrenken H Radiology. 2014 Apr 23:132708. PMID: 24761837. Abstract CommentRecommendBookmarkWatch