TY - JOUR T1 - Critical appraisal for emergency medicine 3: evaluation of a therapy. JO - Emerg Med J PY - 2008/09/01 AU - Goodacre S ED - DO - DOI: 10.1136/emj.2007.057323 VL - 25 IS - 9 SP - 590 EP - 592 Y2 - 2024/10/19 ER -