RT Journal Article
SR Electronic
T1 Ovid
JF Evidence Based Medicine
JO Evid Based Med
FD BMJ Publishing Group Ltd
SP 70
OP 70
DO 10.1136/ebm.5.3.70
VO 5
IS 3
A1 Ed Etchells
YR 2000
UL http://ebm.bmj.com/content/5/3/70.abstract
AB