title: [Levels of scientific evidence].
authors.forename: J C
authors.initials: JC
authors.lastname: Monllau
mesh_terms: D059549:Anterior Cruciate Ligament Reconstruction; D055317:Evidence-Based Practice / Q000592:standards*; D010506:Periodicals as Topic / Q000592:standards*; D016032:Randomized Controlled Trials as Topic / Q000592:standards; D058028:Research Report / Q000592:standards*; D035502:Trust; D057832:Watchful Waiting