PT - JOURNAL ARTICLE AU - P Knowles TI - Transthoracic echocardiography during cardiac arrest due to massive pulmonary embolism AID - 10.1136/emj.20.4.395-a DP - 2003 Jul 01 TA - Emergency Medicine Journal PG - 395--396 VI - 20 IP - 4 4099 - http://emj.bmj.com/content/20/4/395.2.short 4100 - http://emj.bmj.com/content/20/4/395.2.full SO - Emerg Med J2003 Jul 01; 20