[1] Univ Calif Los Angeles, Sch Med, Dept Med, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Sch Med, Div Endocrinol Diabet & Hypertens, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Sch Med, Div Cardiol, Los Angeles, CA 90095 USA
[4] Univ Calif Los Angeles, Sch Med, Dept Pathol & Lab Med, Los Angeles, CA 90095 USA