Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SAFRANEK TJ,Reassessment of the association between Guillain-Barre syndrome and receipt of swine influenza vaccine in 1976-1977: results of a two-state study,Am J Epidemiol,,,1991,133,,940-951,https://cir.nii.ac.jp/crid/1570572701023900672,