RT Journal Article SR Electronic T1 Exploring variation in emergency bed use by older people JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 940 OP 940 DO 10.1136/emermed-2012-201867 VO 29 IS 12 A1 Geoffrey Hughes YR 2012 UL http://emj.bmj.com/content/29/12/940.abstract AB