[1] Univ Oklahoma, Dept Adult Endocrinol, Endocrinol, Hlth Sci Ctr, 1000 N,Lincoln Blvd,Suite 2900, Oklahoma City, OK 73104 USA
[2] Univ Oklahoma, Dept Adult Endocrinol, Hlth Sci Ctr, Oklahoma City, OK USA
[3] Harold Hamm Diabet Ctr, Oklahoma City, OK USA
[4] Univ Oklahoma, Hlth Sci Ctr, Dept Pediat Diabet & Endocrinol, Oklahoma City, OK USA
[5] Univ Oklahoma, Hlth Sci Ctr, Dept Biostat & Epidemiol, Oklahoma City, OK USA