Neuropsychological outcome after chemotherapy for primary CNS lymphoma: a prospective study. - Fliessbach,K.; Helmstaedter,C.; Urbach,H.; Althaus,A.; Pels,H.; Linnebank,M.; Juergens,A.; Glasmacher,A.; Schmidt-Wolf,I.G.; Klockgether,T.; Schlegel,U. (Neurology, 2005)