RT Journal Article
SR Electronic
T1 Purpose and procedure
JF Evidence Based Medicine
JO Evid Based Med
FD BMJ Publishing Group Ltd
SP 33
OP 33
DO 10.1136/ebm.12.2.33
VO 12
IS 2
YR 2007
UL http://ebm.bmj.com/content/12/2/33.abstract
AB