title: An update on the Helsinki Influenza Project.
authors.forename: S A
authors.initials: SA
authors.lastname: Mednick
authors.forename: R A
authors.initials: RA
authors.lastname: Machon
authors.forename: M O
authors.initials: MO
authors.lastname: Huttunen
mesh_terms: D000328:Adult; D004196:Disease Outbreaks; D005260:Female; D005387:Finland; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D007251:Influenza, Human / Q000453:epidemiology*; D008297:Male; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology*; D011262:Pregnancy Trimester, Second; D011297:Prenatal Exposure Delayed Effects; D012559:Schizophrenia / Q000453:epidemiology / Q000209:etiology*