title: [Cohort studies--a Norwegian discovery? An unexpected glimpse from the early years of epidemiology].
authors.affiliation: Avdeling for bakteriologi Statens institutt for folkehelse, Oslo.
authors.forename: J
authors.initials: J
authors.lastname: Lassen
mesh_terms: D015331:Cohort Studies; D004813:Epidemiology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009664:Norway