title: Levels of evidence.
authors.forename: J G
authors.initials: JG
authors.lastname: Wright
authors.forename: M
authors.initials: M
authors.lastname: Swiontkowski
authors.forename: J D
authors.initials: JD
authors.lastname: Heckman
mesh_terms: D019317:Evidence-Based Medicine / Q000592:standards*; D006801:Humans; D019637:Orthopedic Procedures / Q000592:standards*; D010506:Periodicals as Topic