PT  - JOURNAL ARTICLE
ED  - ,
TI  - Purpose and procedure
AID  - 10.1136/ebm.13.6.161
DP  - 2008 Dec 01
TA  - Evidence Based Medicine
PG  - 161--161
VI  - 13
IP  - 6
4099  - http://ebm.bmj.com/content/13/6/161.short
4100  - http://ebm.bmj.com/content/13/6/161.full
SO  - Evid Based Med2008 Dec 01; 13