[1] Yokohama City Univ, Grad Sch Med, Dept Med Sci & Cardiorenal Med, Yokohama, Japan
[2] Tokai Univ, Sch Med, Dept Internal Med, Div Nephrol Endocrinol & Metab, Isehara, Japan
[3] Okayama Saiseikai Gen Hosp, Diabet Ctr, Dept Internal Med, Okayama, Japan
[4] Fukuoka Univ, Sch Med, Dept Endocrinol & Diabet Mellitus, Fukuoka, Japan
[5] Suzuki Diabet Clin, Atsugi, Japan
[6] Hamamatsu Univ, Sch Med, Dept Internal Med 2, Div Endocrinol & Metab, Hamamatsu, Japan
[7] Machimura internal Med Clin, Hiratuska, Japan
[8] Shimura Clin, Sagamihara, Japan
[9] Takeda Clin, Isehara, Japan
[10] Hakuai Clin, Sagamihara, Japan
[11] Shimane Univ, Fac Med, Dept Internal Med 1, Endocrinol & Metab, Izumo, Japan
[12] Miyauchi Diabet Clin, Hadano, Japan
[13] Tokyo Med Univ, Hachioji Med Ctr, Dept Diabetol Endocrinol & Metab, Hachioji, Japan
[14] Kobayashi Hosp, Odawara, Japan
[15] Sagami Junkanki Clin, Sagamihara, Japan
[16] Sagamihara Red Cross Hosp, Dept Internal Med, Sagamihara, Japan
[17] Natl Hosp Org Kyoto Med Ctr, Diabet Ctr, Dept Clin Nutr, Kyoto, Japan
[18] Hadano Stn south gate Clin, Hadano, Japan
[19] Umezono Internal Med Clin, Atsugi, Japan
[20] Yokohama City Univ, Grad Sch Med, Dept Med Sci & Cardiorenal Med, 3-9 Fukuura Kanazawa Ku, Yokohama, Kanagawa 2360004, Japan