PT  - JOURNAL ARTICLE
ED - BMJ Publishing Group Ltd
TI  - PURPOSE AND PROCEDURE
AID  - 10.1136/ebm.8.4.98
DP  - 2003 Jul 01
TA  - Evidence Based Medicine
PG  - 98--98
VI  - 8
IP  - 4
4099  - http://ebm.bmj.com/content/8/4/98.short
4100  - http://ebm.bmj.com/content/8/4/98.full
SO  - Evid Based Med2003 Jul 01; 8