%0 Journal Article %T Phonological Fluency Strategy of Switching Differentiates Relapsing-Remitting and Secondary Progressive Multiple Sclerosis Patients %A L. Messinis %A M. H. Kosmidis %A C. Vlahou %A A. C. Malegiannaki %J ISRN Neurology %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/451429 %U http://dx.doi.org/10.1155/2013/451429