RT Journal Article SR Electronic T1 Three into one does go? JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 178 OP 179 DO 10.1136/emermed-2019-209248 VO 37 IS 4 A1 Clifford Mann YR 2020 UL http://emj.bmj.com/content/37/4/178.abstract AB