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1. Extavia [Prescribing Information]. East Hanover, NJ: Novartis Pharmaceuticals Corp; 2016. 2. Betaseron [Prescribing Information]. Montville, NJ: Bayer HealthCare Pharmaceuticals Inc; 2016. 3. Kappos L, Polman CH, Freedman MS, et al. Treatment with interferon beta-1b delays conversion to clinically definite and McDonald MS in patients with clinically isolated syndromes. Neurology. 2006;67:1242-1249. 4. Fingertip Formulary®. Analytics report. Extavia: Percentage of covered lives. Accessed October 2017.