Visual Abstracts

These visual abstracts were created by the authors of papers published in Thorax as a visual aid to understanding the findings of their research. Click on the images to view a high quality version of the abstract, and click the article title in order to read the full paper. © Author(s) (or their employer(s)). All visual abstracts have the same copyright ownership and reuse and/or permission requirements as their linked article. For all information on this please see the relevant article to which it relates.