[1] Harvard Univ, Div Cardiovasc, Vasc Med & Atherosclerosis Unit, Brigham & Womens Hosp,Med Sch,Dept Med, Boston, MA 02115 USA
[2] Univ Penn, Sch Med, Div Endocrinol Diabet & Metab, Dept Med, Philadelphia, PA 19104 USA
[3] Univ Penn, Sch Med, Dept Genet, Philadelphia, PA 19104 USA