title: Application of the Poser criteria in primary progressive multiple sclerosis.
authors.forename: G V
authors.initials: GV
authors.lastname: McDonnell
authors.forename: S A
authors.initials: SA
authors.lastname: Hawkins
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000175:diagnosis*; D012720:Severity of Illness Index