This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Pie chart of lung cancers.svg lung cancer types sorted by histological subtypes in turn sorted into how many are nonsmokers versus smokers defined as current or former smoker of more than year of duration according to ncbi nlm nih gov Table in cite journal Kenfield SA Wei EK Stampfer MJ Rosner BA Colditz GA Comparison of aspects