RT Journal Article SR Electronic T1 Severe valvar aortic stenosis in a child with familial hypercholesterolaemia JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 238 OP 238 DO 10.1136/hrt.2003.018564 VO 90 IS 3 A1 S Harikrishnan A1 C K Byju A1 J Tharakan YR 2004 UL http://heart.bmj.com/content/90/3/238.abstract AB