RT Journal Article
SR Electronic
T1 Grading evidence
JF Canadian Medical Association Journal
JO CMAJ
FD Canadian Medical Association
SP 928
OP 929
DO 10.1503/cmaj.1031694
VO 170
IS 6
A1 Tevaarwerk, Gerald J.M.
YR 2004
UL http://www.cmaj.ca/content/170/6/928.abstract