The Symbol Digit Modalities Test as sentinel test for cognitive impairment in multiple sclerosis. Van Schependom J, D'hooghe M, Cleynhens K, D'hooge M, Haelewyck MC, De Keyser J, Nagels G Eur J Neurol. 2014 May 22. PMID: 24850580. Abstract CommentRecommendBookmarkWatch