title: Surrogate endpoints for EDSS worsening in multiple sclerosis: a meta-analytic approach: measuring disability in relapsing-remitting MS.
authors.forename: George C
authors.initials: GC
authors.lastname: Ebers
authors.forename: Martin
authors.initials: M
authors.lastname: Daumer
authors.forename: Antonio
authors.initials: A
authors.lastname: Scalfari
mesh_terms: D004185:Disability Evaluation; D006801:Humans; D020529:Multiple Sclerosis, Relapsing-Remitting / Q000175:diagnosis* / Q000503:physiopathology