[1] Kyoto Prefectural Univ Med, Grad Sch Med Sci, Dept Endocrinol & Metab, 465 Kajii Cho, Kawaramachi Hirokoji,Kamigyo Ku, Kyoto 6028566, Japan
[2] Matsushita Mem Hosp, Dept Diabet & Endocrinol, 5-55 Sotojima Cho, Moriguchi 5708540, Japan
[3] Panason Hlth Insurance Org, Dept Hlth Care Ctr, 5-55 Sotojima Cho, Moriguchi 5708540, Japan
[4] Matsushita Mem Hosp, Dept Orthopaed Surg, 5-55 Sotojima Cho, Moriguchi 5708540, Japan