We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleNatural history of primary progressive multiple sclerosis.AuthorsEbers GCPublicationMultiple sclerosis (Houndmills, Basingstoke, England), 2004, Vol 10 Suppl 1, pS8ISSN1352-4585Publication typearticleDOI10.1191/1352458504ms1025oa