Letters to the Editor

Goodin DS Hurwitz B Noronha A : Neutralizing antibodies to interferon beta-1b are not associated with disease worsening in multiple sclerosis. J Int Med Res 2007; 35: 173–187.

Sorensen PS Koch-Henriksen N Ross C : Appearance and disappearance of neutralizing antibodies during interferon-beta therapy. Neurology 2005; 65: 33–39.

Francis GS Rice GP Alsop JC : Interferon beta-1a in MS: Results following development of neutralizing antibodies in PRISMS. Neurology 2005; 65: 48–55.

Kappos L Clanet M Wollheim M Sandberg Radue : Neutralizing antibodies and efficacy of interferon beta-1a: A 4-year controlled study. Neurology 2005; 65: 40–47.

Clanet M Radue EW Kappos L : A randomized, double-blind, dose-comparison study of weekly interferon beta-1a in relapsing MS. Neurology 2002; 59: 1507–1517.

Sorensen PS Ross C Clemmesen KM : Clinical importance of neutralising antibodies against interferon beta in patients with relapsing-remitting multiple sclerosis. Lancet 2003; 362: 1184–1191.