Interferon β for secondary progressive multiple sclerosis: a systematic review
Loredana La Mantia, Laura Vacchi, Marco Rovaris, Carlo Di Pietrantonj, George Ebers, Sten Fredrikson, Graziella Filippini
Journal of Neurology, Neurosurgery & Psychiatry Apr 2013, 84 (4) 420-426; DOI: 10.1136/jnnp-2012-303291