TY - RPRT TI - Cognitive dysfunction and change in multiple sclerosis. AU - F R Halligan AU - M Reznikoff AU - H P Friedman AU - N G La Rocca PY - 1988 DO - 10.1002/1097-4679(198807)44:4<540::aid-jclp2270440410>3.0.co;2-9 UR - https://pubmed.ncbi.nlm.nih.gov/3170759/ ID - 3170759 ER -