RT Journal Article SR Electronic T1 Emergency psychiatry: principles and practice JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 684 OP 685 DO 10.1136/emj.2009.071969 VO 26 IS 9 A1 Alexander, J YR 2009 UL http://emj.bmj.com/content/26/9/684.3.abstract AB