RT Journal Article SR Electronic T1 Mediastinal emphysema after a minor oral laceration JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 182 OP 182 DO 10.1136/emj.19.2.182 VO 19 IS 2 A1 S R Abdulla A1 A Sen YR 2002 UL http://emj.bmj.com/content/19/2/182.abstract AB