RT Journal Article SR Electronic T1 Dalfampridine improves slowed processing speed in MS JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 325 OP 326 DO 10.1212/WNL.0000000000007964 VO 93 IS 8 A1 Sumowski, James F. A1 Muhlert, Nils YR 2019 UL http://n.neurology.org/content/93/8/325.abstract AB