%0 Journal Article %T Pneumomediastinum and Pneumopericardium %A Aparajita Singh %A MD %A MPH %A Brian Harte %A MD %J Journal of Hospital Medicine %D 2009 %R 10.1002/jhm.475 %U https://www.journalofhospitalmedicine.com/jhospmed/article/128375/pneumomediastinum-and-pneumopericardium