Grades of recommendation.
Wright
James G
JG
Einhorn
Thomas A
TA
Heckman
James D
JD
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