PT - JOURNAL ARTICLE ED - , TI - A normal alveolar dead space fraction plus <span class="sc">d</span>-dimer assay ruled out suspected pulmonary embolism in the emergency department AID - 10.1136/ebm.6.5.158 DP - 2001 Sep 01 TA - Evidence Based Medicine PG - 158--158 VI - 6 IP - 5 4099 - http://ebm.bmj.com/content/6/5/158.short 4100 - http://ebm.bmj.com/content/6/5/158.full SO - Evid Based Med2001 Sep 01; 6