title: Birth order in multiple sclerosis.
authors.forename: W H
authors.initials: WH
authors.lastname: James
mesh_terms: D001722:Birth Order; D016022:Case-Control Studies; D015331:Cohort Studies; D003718:Denmark; D006801:Humans; D015233:Models, Statistical; D009103:Multiple Sclerosis / Q000209:etiology*