title: Berkson's bias reviewed.
authors.affiliation: Division of Epidemiology, Institute for Environmental Medicine, Karolinska Institutet, Stockholm, Sweden. schwartzbaum.1@osu.edu
authors.forename: Judith
authors.initials: J
authors.lastname: Schwartzbaum
authors.forename: Anders
authors.initials: A
authors.lastname: Ahlbom
authors.forename: Maria
authors.initials: M
authors.lastname: Feychting
mesh_terms: D016022:Case-Control Studies; D004194:Disease / Q000145:classification; D016021:Epidemiologic Studies; D006801:Humans; D010343:Patient Admission; D011336:Probability; D015983:Selection Bias