Lee YJ, Jin SW, Jang SH, Jang YS, Lee EK, Kim YJ, Lee MY, Park JC, Rho TH, Kim JH, Hong SJ, Choi KB
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Korean J Intern Med.
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2001 Sep;16(3):205-209.
Spontaneous medialstinal emphysema (pneumomediastinum) and pneumopericardium may be defined as the presence of free air or gas in the mediastinal structures and in the pericardial sac without an apparent precipitating...