[1] Anan Med Ctr, Dept Internal Med, 6-1 Kawahara Takarada Cho, Anan 7740045, Japan
[2] Tokushima Univ, Grad Sch Biomed Sci, Dept Hematol Endocrinol & Metab, 3-18-15 Kuramoto Cho, Tokushima 7708503, Japan
[3] Tokushima Univ, Grad Sch Biomed Sci, Dept Community Med & Med Sci, 3-18-15 Kuramoto Cho, Tokushima 7708503, Japan
[4] Tokushima Univ, Inst Adv Med Sci, Diabet Therapeut & Res Ctr, 3-18-15 Kuramoto Cho, Tokushima 7708503, Japan
[5] Tokushima Univ, Grad Sch Biomed Sci, Dept Bioregulatory Sci, 3-18-15 Kuramoto Cho, Tokushima 7708503, Japan