RT Journal Article SR Electronic T1 Towards evidence based emergency medicine: best BETs from the Manchester Royal Infirmary JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 247 OP 247 DO 10.1136/emj.19.3.247 VO 19 IS 3 A1 Mackway-Jones, K YR 2002 UL http://emj.bmj.com/content/19/3/247.1.abstract AB