PT  - JOURNAL ARTICLE
ED  - ,
TI  - Purpose and procedure
AID  - 10.1136/ebm.12.4.97
DP  - 2007 Aug 01
TA  - Evidence Based Medicine
PG  - 97--97
VI  - 12
IP  - 4
4099  - http://ebm.bmj.com/content/12/4/97.short
4100  - http://ebm.bmj.com/content/12/4/97.full
SO  - Evid Based Med2007 Aug 01; 12