TY - RPRT TI - Conversion of Diffusely Abnormal White Matter to Focal Lesions is Linked to Progression in Secondary Progressive Multiple Sclerosis AU - Dadar, M. AU - Narayanan, S. AU - Arnold, D. L. AU - Collins, D. L. AU - Maranzano, J. PY - 2019 DO - 10.1101/832345 UR - https://www.biorxiv.org/content/10.1101/832345v1 ID - 10.1101/832345 ER -