title: Grades of recommendation.
authors.forename: James G
authors.initials: JG
authors.lastname: Wright
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Einhorn
authors.forename: James D
authors.initials: JD
authors.lastname: Heckman
mesh_terms: D035081:Editorial Policies; D019317:Evidence-Based Medicine / Q000145:classification*; D006801:Humans; D019637:Orthopedic Procedures / Q000379:methods*; D009985:Orthopedics / Q000379:methods*; D010506:Periodicals as Topic; D012196:Review Literature as Topic