[1] Univ Colorado, Dept Med, Div Cardiol, Denver, CO USA
[2] Univ Colorado, Div Gen Internal Med, Denver, CO USA
[3] Hlth Sci Ctr, Denver, CO USA
[4] Mt Sinai Sch Med, Div Expt Diabet & Aging, Dept Geriatr, New York, NY USA
[5] Univ Colorado, Dept Med, Div Endocrinol, Denver, CO USA
[6] Denver VA Med Ctr, Denver, CO USA