BrownJWLColesAHorakovaD, et al. Association of initial disease-modifying therapy with later conversion to secondary progressive multiple sclerosis. JAMA2019; 321(2): 175–187.
5.
KalincikTBrownJWLRobertsonN, et al. Treatment effectiveness of alemtuzumab compared with natalizumab, fingolimod, and interferon beta in relapsing-remitting multiple sclerosis: A cohort study. Lancet Neurol2017; 16(4): 271–281.