Ascending Axonal Degeneration of the Corticospinal Tract in Pure Hereditary Spastic Paraplegia: A Cross-Sectional DTI Study - List, Julia; Kohl, Zacharias; Winkler, Juergen; Marxreiter, Franz; Doerfler, Arnd; Schmidt, Manuel A. (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2019)