RT Journal Article SR Electronic T1 Ligamentum teres sign JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 728 OP 728 DO 10.1136/emj.2010.098699 VO 28 IS 8 A1 Ching-Hsing Lee A1 Shu-Chen Liao A1 Cheng-Hsien Hsieh A1 Yu-Che Chang YR 2011 UL http://emj.bmj.com/content/28/8/728.abstract AB