PT  - JOURNAL ARTICLE
ED  - ,
TI  - PURPOSE AND PROCEDURE
AID  - 10.1136/ebm.6.5.130
DP  - 2001 Sep 01
TA  - Evidence Based Medicine
PG  - 130--131
VI  - 6
IP  - 5
4099  - http://ebm.bmj.com/content/6/5/130.short
4100  - http://ebm.bmj.com/content/6/5/130.full
SO  - Evid Based Med2001 Sep 01; 6