title: H1N1 vaccination does not increase risk of relapse in multiple sclerosis: a self-controlled case-series study.
authors.forename: Mauricio F
authors.initials: MF
authors.lastname: Farez
authors.forename: María C
authors.initials: MC
authors.lastname: Ysrraelit
authors.forename: Marcela
authors.initials: M
authors.lastname: Fiol
authors.forename: Jorge
authors.initials: J
authors.lastname: Correale
mesh_terms: D000328:Adult; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000009:adverse effects*; D007251:Influenza, Human / Q000517:prevention & control*; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000453:epidemiology*; D012307:Risk Factors
chemical_list: D007252:Influenza Vaccines