RT Journal Article SR Electronic T1 Fetal roots of cardiac disease JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 867 OP 868 DO 10.1136/hrt.2004.047407 VO 91 IS 7 A1 Thornburg, K L A1 Louey, S YR 2005 UL http://heart.bmj.com/content/91/7/867.abstract AB