title: Birth order, infection in early life, and multiple sclerosis.
authors.forename: Anne-Louise
authors.initials: AL
authors.lastname: Ponsonby
authors.forename: Ingrid
authors.initials: I
authors.lastname: van der Mei
authors.forename: Terence
authors.initials: T
authors.lastname: Dwyer
authors.forename: Leigh
authors.initials: L
authors.lastname: Blizzard
authors.forename: Bruce
authors.initials: B
authors.lastname: Taylor
authors.forename: Andrew
authors.initials: A
authors.lastname: Kemp
mesh_terms: D001722:Birth Order; D006801:Humans; D007239:Infections / Q000150:complications*; D009103:Multiple Sclerosis / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D012307:Risk Factors