title: Primary and secondary progressive MS have a similar age at onset of progression - NO.
authors.affiliation: Faculty of Medicine (Neurology), Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada.
authors.forename: Helen
authors.initials: H
authors.lastname: Tremlett
authors.affiliation: Faculty of Medicine (Neurology), Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada.
authors.forename: Yinshan
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D000328:Adult; D000367:Age Factors; D017668:Age of Onset; D018450:Disease Progression; D006801:Humans; D008875:Middle Aged; D020528:Multiple Sclerosis, Chronic Progressive / Q000453:epidemiology / Q000503:physiopathology