RT Journal Article SR Electronic T1 NICE head injury guidelines—expensive? Yes, but what are the alternatives? JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 160 OP 160 DO 10.1136/emj.2005.024430 VO 23 IS 2 A1 Sammy, I YR 2006 UL http://emj.bmj.com/content/23/2/160.2.abstract AB