title: Overestimated disease duration.
authors.forename: D A
authors.initials: DA
authors.lastname: Compston
authors.forename: R J
authors.initials: RJ
authors.lastname: Swingler
mesh_terms: D002423:Cause of Death; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D006801:Humans; D015994:Incidence; D009103:Multiple Sclerosis / Q000401:mortality*; D014852:Wales / Q000453:epidemiology