Efficacy of natalizumab in second line therapy of relapsing-remitting multiple sclerosis: results from a multi-center study in German speaking countries

Putzki N, Yaldizli O, Mäurer M, Cursiefen S, Kuckert S, Klawe C, Maschke M, Tettenborn B, Limmroth V. Efficacy of natalizumab in second line therapy of relapsing-remitting multiple sclerosis: results from a multi-center study in German speaking countries. European journal of neurology : the official journal of the European Federation of Neurological Societies 2009