title: Inadequate outcome measures are the biggest impediment to successful clinical trials in progressive MS - NO.
authors.affiliation: Mellen Center for Multiple Sclerosis, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Fox
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D020528:Multiple Sclerosis, Chronic Progressive / Q000628:therapy*; D017063:Outcome Assessment, Health Care; D016896:Treatment Outcome