[1] Mayo Clin, Div Endocrinol Diabet Metab & Nutr, Rochester, MN 55905 USA
[2] Mayo Clin, Knowledge & Evaluat Res Unit Endocrinol KER Endo, Rochester, MN 55905 USA
[3] Korea Univ, Coll Med, Dept Prevent Med, Seoul 136705, South Korea
[4] Korea Univ, Grad Sch, Dept Publ Hlth, Seoul, South Korea
[5] Chungbuk Natl Univ, Coll Med, Cheongju, South Korea
[6] Chungbuk Natl Univ, MedRIC, Cheongju, South Korea
[7] Chungbuk Natl Univ, PSM, Cheongju, South Korea