%0 Journal Article %A Avinash Aujayeb %A Jonathan Miller %A Mark Weatherhead %A David Cooper %T Four cases of pneumomediastinum %B Case Report %D 2015 %R 10.1183/20734735.009715 %J Breathe %P e1-e6 %V 11 %N 4 %U https://breathe.ersjournals.com/content/breathe/11/4/e1.full.pdf