Introducing levels of evidence to the journal.
Wright
James G
JG
Swiontkowski
Marc F
MF
Heckman
James D
JD
D019317:Evidence-Based Medicine / Q000145:classification* / Q000592:standards*; D006801:Humans; D009985:Orthopedics / Q000145:classification* / Q000592:standards*; D010506:Periodicals as Topic / Q000145:classification* / Q000592:standards*