RT Journal Article SR Electronic T1 Two- and three-dimensional imaging of coarctation shelf in the human fetus JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 584 OP 584 DO 10.1136/hrt.2007.130294 VO 94 IS 5 A1 F S Molina A1 K H Nicolaides A1 J S Carvalho YR 2008 UL http://heart.bmj.com/content/94/5/584.abstract AB