RT Journal Article SR Electronic T1 Rapid diagnosis of ectopic pregnancy JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 521 OP 521 DO 10.1136/emermed-2011-200984 VO 29 IS 6 A1 Devesh Sharma A1 Abha Govind YR 2012 UL http://emj.bmj.com/content/29/6/521.abstract AB