title: Level-III and IV Evidence: Still Essential for the Field of Musculoskeletal Medicine and Surgery.
authors.affiliation: University of Washington, Seattle, Washington.
authors.forename: Bruce J
authors.initials: BJ
authors.lastname: Sangeorzan
authors.affiliation: Editor-in-Chief.
authors.forename: Marc
authors.initials: M
authors.lastname: Swiontkowski
mesh_terms: D019317:Evidence-Based Medicine; D006801:Humans; D009985:Orthopedics