1. Volume 151, Issue 3, Pages 544-554 (March 2017)
Prevalence and Localization of Pulmonary Embolism in Unexplained Acute Exacerbations of COPD 
Floor E. Aleva, MD, Lucas W.L.M. Voets, BSc, Sami O. Simons, MD, PhD, Quirijn de Mast, MD, PhD, André J.A.M. van der Ven, MD, PhD, Yvonne F. Heijdra, MD, PhD 
CHEST 
Volume 151, Issue 3, Pages (March 2017)
DOI: /j.chest
Copyright © 2016 American College of Chest Physicians Terms and Conditions

2. Figure 1
Flow diagram of the study selection process and numbers of studies identified. AE-COPD = acute exacerbation of COPD. aStudies could have fulfilled more than one criterion.
CHEST  , DOI: ( /j.chest )
Copyright © 2016 American College of Chest Physicians Terms and Conditions

3. Figure 2
Prevalence of PE in patients with AE-COPD. PE = pulmonary embolism; W = weight. See Figure 1 legend for expansion of other abbreviation.
CHEST  , DOI: ( /j.chest )
Copyright © 2016 American College of Chest Physicians Terms and Conditions

4. Figure 3
Prevalence of DVT in patients with AE-COPD. See Figure 1 and 2 legends for expansion of other abbreviations.
CHEST  , DOI: ( /j.chest )
Copyright © 2016 American College of Chest Physicians Terms and Conditions