[1] Harvard Univ, Broad Inst, Cambridge, MA 02139 USA
[2] MIT, Cambridge, MA 02139 USA
[3] Massachusetts Gen Hosp, Div Cardiol, Boston, MA 02114 USA
[4] NHLBI, Framingham Heart Study, Framingham, MA 01702 USA
[5] Harvard Univ, Sch Med, Dept Pediat, Boston, MA 02115 USA
[6] Childrens Hosp, Div Genet, Boston, MA 02115 USA
[7] Childrens Hosp, Div Endocrinol, Boston, MA 02115 USA