IFNB1 and multiple sclerosis: 18 Spelman Spelman T T Frisell Frisell T T Piehl Piehl F F Comparative effectiveness of rituximab relative to IFN-β or glatiramer acetatein relapsing-remitting MS from the Swedish MS registry Comparative effectiveness of rituximab relative to IFN-β or glatiramer acetatein relapsing-remitting MS from the Swedish MS registry Multiple sclerosis (Houndmills, Basingstoke, England) Multiple sclerosis (Houndmills, Basingstoke, England) 2018 2018 24 24 1087 1087 1095 1095 28649912 28649912