RT Journal Article SR Electronic T1 Papillary fibroelastoma in the left ventricular outflow tract JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 590 OP 590 DO 10.1136/hrt.2006.093013 VO 93 IS 5 A1 C A Efthymiou A1 N Moorjani A1 S A Livesey YR 2007 UL http://heart.bmj.com/content/93/5/590.abstract AB