PT - JOURNAL ARTICLE AU - J Timperley AU - A R J Mitchell AU - H Becher TI - Contrast echocardiography for left ventricular opacification AID - 10.1136/heart.89.12.1394 DP - 2003 Dec 01 TA - Heart PG - 1394--1397 VI - 89 IP - 12 4099 - http://heart.bmj.com/content/89/12/1394.short 4100 - http://heart.bmj.com/content/89/12/1394.full SO - Heart2003 Dec 01; 89