title: Exposure to infant siblings during early life and risk of multiple sclerosis.
authors.forename: Klemens
authors.initials: K
authors.lastname: Ruprecht
authors.forename: Hervé
authors.initials: H
authors.lastname: Perron
mesh_terms: D020031:Epstein-Barr Virus Infections / Q000150:complications; D004854:Herpesvirus 4, Human / Q000472:pathogenicity*; D006801:Humans; D009103:Multiple Sclerosis / Q000821:virology*; D012190:Retroviridae / Q000472:pathogenicity*; D012192:Retroviridae Infections / Q000150:complications