RT Journal Article SR Electronic T1 Non-conveyance of 999 callers: early findings related subsequent health services callers JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 8 OP 8 DO 10.1136/emj.2009.075416h VO 26 IS 10 A1 M Al-Sulaiti A1 H Snooks A1 A Porter YR 2009 UL http://emj.bmj.com/content/26/10/8.abstract AB