RT Journal Article SR Electronic T1 Air below the right diaphragm: Chilaiditi sign JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 300 OP 300 DO 10.1136/emj.2007.052027 VO 25 IS 5 A1 K Sanyal A1 K Sabanathan YR 2008 UL http://emj.bmj.com/content/25/5/300.abstract AB