RT Journal Article SR Electronic T1 Tension pneumoperitoneum JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 943 OP 943 DO 10.1136/emermed-2013-203469 VO 31 IS 11 A1 David T Williams A1 Pej Manoochehri A1 Hyung T Kim YR 2014 UL http://emj.bmj.com/content/31/11/943.abstract AB