RT Journal Article SR Electronic T1 A hyperdense dot JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 481 OP 481 DO 10.1136/emermed-2015-205021 VO 33 IS 7 A1 Shing Ching A1 Soo Moi Ting YR 2016 UL http://emj.bmj.com/content/33/7/481.abstract AB