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authors.forename: Jens Ivar
authors.initials: JI
authors.lastname: Brox
authors.forename: Olav
authors.initials: O
authors.lastname: Reikerås
authors.forename: Roger
authors.initials: R
authors.lastname: Sørensen
authors.forename: Rolf
authors.initials: R
authors.lastname: Riise
authors.forename: Øystein
authors.initials: Ø
authors.lastname: Nygård
authors.forename: Tor
authors.initials: T
authors.lastname: Ingebrigtsen
authors.forename: Anne
authors.initials: A
authors.lastname: Keller
authors.forename: Aage
authors.initials: A
authors.lastname: Indahl
authors.forename: Inger
authors.initials: I
authors.lastname: Holm
authors.forename: Astrid
authors.initials: A
authors.lastname: Friis
authors.forename: Anne Kathrine
authors.initials: AK
authors.lastname: Koller
authors.forename: Hege
authors.initials: H
authors.lastname: Eriksen
mesh_terms: D002140:California; D016001:Confidence Intervals; D003362:Cost-Benefit Analysis; D017721:Hospital Costs; D006801:Humans; D009664:Norway; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data; D018401:Sample Size; D012680:Sensitivity and Specificity; D013123:Spinal Fusion / Q000191:economics / Q000706:statistics & numerical data*; D013548:Sweden