[1] NHGRI, Social and Behav Res Branch, NIH, Bethesda, MD 20892 USA
[2] Johns Hopkins Univ, Sch Med, Div Endocrinol Diabet & Metab, Baltimore, MD USA
[3] Albert Einstein Coll Med, Div Hematol, Montefiore Med Ctr, Bronx, NY 10467 USA
[4] NHGRI, Social & Behav Res Branch, Bethesda, MD 20892 USA
[5] NHGRI, NIH, Bethesda, MD 20892 USA
[6] Albert Einstein Coll Med, Bronx, NY 10467 USA
[7] NIH, Dept Lab Med, Bldg 10, Bethesda, MD 20892 USA
[8] Univ Massachusetts, Dept Psychol & Brain Sci, Amherst, MA 01003 USA
[9] NICHHD, Sect Endocrinol & Genet, NIH, Bethesda, MD 20892 USA