[1] Mayo Clin, Div Endocrinol, Rochester, MN 55905 USA
[2] Univ Iowa, Carver Coll Med, Div Endocrinol & Metab, Coralville, IA USA
[3] Harbor UCLA Med Ctr, Div Nephrol & Hypertens, Torrance, CA 90509 USA
[4] Mayo Clin, Dept Neurol, Rochester, MN USA
[5] Univ Michigan, Dept Ophthalmol & Visual Sci, Ann Arbor, MI 48109 USA
[6] Univ Colorado, Denver, CO 80202 USA
[7] Natl Jewish Hlth, Denver, CO USA
[8] Harvard Univ, Sch Publ Hlth, Dept Genet & Complex Dis, Boston, MA 02115 USA
[9] Karolinska Inst, Dept Physiol & Pharmacol, Stockholm, Sweden
[10] Arizona State Univ, Sch Life Sci, Tempe, AZ USA
[11] Univ Maryland, Dept Med, Baltimore, MD 21201 USA
[12] Albert Einstein Coll Med, Dept Med & Mol Pharmacol, Bronx, NY 10467 USA
[13] Univ Missouri, Sch Med, Dept Med, Diabet & Cardiovasc Ctr, Columbia, MO 65212 USA
[14] Columbia Univ, Dept Genet & Dev, New York, NY USA
[15] Univ Cambridge, Addenbrookes Hosp, Inst Publ Hlth, MRC Epidemiol Unit,Inst Metab Sci, Cambridge CB2 2QQ, England