PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/ebm.1998.3.104 DP - 1998 Aug 01 TA - Evidence Based Medicine PG - 104--104 VI - 3 IP - 4 4099 - http://ebm.bmj.com/content/3/4/104.short 4100 - http://ebm.bmj.com/content/3/4/104.full SO - Evid Based Med1998 Aug 01; 3