title: Underlying medical conditions and hospitalization for pandemic (H1N1) 2009, Japan.
authors.forename: Taro
authors.initials: T
authors.lastname: Tomizuka
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Takayama
authors.forename: Tokuaki
authors.initials: T
authors.lastname: Shobayashi
authors.forename: Yasumasa
authors.initials: Y
authors.lastname: Fukushima
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Suzuki
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000150:complications* / Q000453:epidemiology*; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D058873:Pandemics; D011159:Population Surveillance / Q000379:methods; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology* / Q000821:virology; D015995:Prevalence; D055815:Young Adult