[1] Univ Southern Calif, Keck Sch Med, Dept Med, Div Endocrinol, Los Angeles, CA 90007 USA
[2] Univ Southern Calif, Keck Sch Med, Diabet & Obes Res Inst, Los Angeles, CA 90089 USA
[3] Univ Southern Calif, Dept Prevent Med, Los Angeles, CA 90007 USA
[4] Kaiser Permanente Southern Calif, Dept Res & Evaluat, Pasadena, CA 91101 USA
[5] Univ Southern Calif, Keck Sch Med, Dept Neurol, Los Angeles, CA 90089 USA
[6] Harvard Med Sch, Dana Farber Inst, Dept Med Oncol, Div Populat Sci, Boston, MA 02215 USA