1. Changes in the normal appearing brain tissue and cognitive impairment in multiple sclerosis. Issue 2 (1st February 2000) Authors: Filippi, M; Tortorella, C; Rovaris, M; Bozzali, M; Possa, F; Sormani, M P; Iannucci, G; Comi, G Journal: Journal of neurology, neurosurgery and psychiatry Issue: Volume 68:Issue 2(2000) Page Start: 157 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗