title: Concerns about study on maternal H1N1 influenza vaccination and offspring mortality.
authors.affiliation: Department of Haematology, National Hospital Organization Nagasaki Medical Centre, Omura, Japan junya.makiyama@me.com.
authors.forename: Junya
authors.initials: J
authors.lastname: Makiyama
authors.affiliation: Department of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
authors.forename: Michihiro
authors.initials: M
authors.lastname: Kono
authors.affiliation: Department of Healthcare Epidemiology, Kyoto University Graduate School of Medicine and Public Health, Kyoto, Japan.
authors.forename: Sayaka
authors.initials: S
authors.lastname: Shimizu
mesh_terms: D005260:Female; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology*; D007251:Influenza, Human / Q000401:mortality* / Q000517:prevention & control*; D008297:Male; D011159:Population Surveillance; D011247:Pregnancy; D035781:Siblings; D014611:Vaccination / Q000379:methods*