PT - JOURNAL ARTICLE AU - S Goodacre TI - Critical appraisal for emergency medicine 3: Evaluation of a therapy AID - 10.1136/emj.2007.057323 DP - 2008 Sep 01 TA - Emergency Medicine Journal PG - 590--592 VI - 25 IP - 9 4099 - http://emj.bmj.com/content/25/9/590.short 4100 - http://emj.bmj.com/content/25/9/590.full SO - Emerg Med J2008 Sep 01; 25