RT Journal Article SR Electronic T1 Persistent "haematoma". JF Journal of Accident & Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 303 OP 303 DO 10.1136/emj.16.4.303 VO 16 IS 4 A1 M J Clancy YR 1999 UL http://emj.bmj.com/content/16/4/303.abstract AB