Figure 1
From: Capnometry in suspected pulmonary embolism with positive D-dimer in the field
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fcc8197/MediaObjects/13054_2009_Article_7621_Fig1_HTML.jpg)
The flow diagram of recruitment, exclusion and subsequent grouping of all patients in the study. PE = pulmonary embolism; PetCO2 = partial pressure of end-tidal carbon dioxide.