by Boz, C. et al.
Department of Neurology, Medical Faculty of Karadeniz Technical University, Trabzon 61080, Turkey
Department of Neurology, Medical Faculty of Karadeniz Technical University, Trabzon 61080, Turkey
Reduced effectiveness of long-term interferon-beta treatment on relapses in neutralizing antibody-positive multiple sclerosis patients: a Canadian multiple sclerosis clinic-based study.
Mult. Scler. 2007; 9:1127-37
