[1] Univ Missouri Columbia Sch Med, Div Endocrinol Diabet & Metab, Dept Internal Med, Columbia, MO USA
[2] Univ Missouri Columbia Sch Med, Dept Med Pharmacol & Physiol, Columbia, MO USA
[3] Diabet & Cardiovasc Ctr, Columbia, MO USA
[4] Harry S Truman VA Med Ctr, Columbia, MO USA