1. Epidemiology of Environmental Exposure and Malignant Mesothelioma
Bian Liu, PhD, Maaike van Gerwen, MD, Stefano Bonassi, PhD, Emanuela Taioli, MD, PhD 
Journal of Thoracic Oncology 
Volume 12, Issue 7, Pages (July 2017)
DOI: /j.jtho
Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

2. Figure 1 Flowchart of the studies’ selection.
Journal of Thoracic Oncology  , DOI: ( /j.jtho )
Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

3. Figure 2
Relative quality expressed as z scores (y axis) of the studies reviewed (x axis, in the same order as they appear in Table 1). Dots are colored according to the country of origin and sized according to the total sample size of the study. UK, United Kingdom; USA, United States.
Journal of Thoracic Oncology  , DOI: ( /j.jtho )
Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

4. Figure 3
Geographic locations of the reviewed studies with the numbers of studies from each location.
Journal of Thoracic Oncology  , DOI: ( /j.jtho )
Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

5. Figure 4
Ratios of male to female patients among malignant mesothelioma cases reporting overall exposure (occupational and environmental) and environmental exposure (EE) to asbestos.
Journal of Thoracic Oncology  , DOI: ( /j.jtho )
Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions

6. Figure 5
Percentage of malignant mesothelioma (MM) cases with nonidentifiable asbestos exposure.
Journal of Thoracic Oncology  , DOI: ( /j.jtho )
Copyright © 2017 International Association for the Study of Lung Cancer Terms and Conditions