PT - JOURNAL ARTICLE AU - Jeremy D P Bland TI - Letter AID - 10.1136/ebm.13.2.38 DP - 2008 Apr 01 TA - Evidence Based Medicine PG - 38--38 VI - 13 IP - 2 4099 - http://ebm.bmj.com/content/13/2/38.1.short 4100 - http://ebm.bmj.com/content/13/2/38.1.full SO - Evid Based Med2008 Apr 01; 13