RT Journal Article SR Electronic T1 Post-operative shortness of breath JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 330 OP 331 DO 10.1136/emermed-2016-206068 VO 34 IS 5 A1 M Haden YR 2017 UL http://emj.bmj.com/content/34/5/330.abstract AB