[1] Yonsei Univ, Coll Med, Dept Internal Med, Div Endocrinol & Metab, Seoul 120752, South Korea
[2] Ajou Univ, Sch Med, Dept Endocrinol & Metab, Suwon 441749, South Korea
[3] Kyung Hee Univ, Dept Internal Med, Div Endocrinol & Metab, Seoul, South Korea
[4] Kyungpook Natl Univ, Sch Med, Dept Internal Med, Taegu, South Korea
[5] Kyungpook Natl Univ, Sch Med, Dept Orthoped Surg, Taegu, South Korea
[6] Asan Med Ctr, Dept Internal Med, Div Endocrinol & Metab, Seoul, South Korea
[7] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Div Endocrinol & Metab,Dept Med, Seoul, South Korea
[8] Catholic Univ Korea, Seoul St Marys Hosp, Dept Internal Med, Div Endocrinol & Metab, Seoul, South Korea
[9] Chonnam Natl Univ, Sch Med, Dept Internal Med, Div Endocrinol & Metab, Kwangju, South Korea
[10] Pusan Natl Univ, Coll Med, Dept Internal Med, Div Endocrinol & Metab, Pusan 609735, South Korea
[11] Hanyang Univ, Dept Internal Med, Div Endocrinol & Metab, Seoul 133791, South Korea
[12] Chungnam Natl Univ, Dept Internal Med, Div Endocrinol & Metab, Taejon, South Korea
[13] Chonbuk Natl Univ Hosp, Dept Internal Med, Div Endocrinol & Metab, Jeonju, South Korea
[14] SoonChunHyang Univ Hosp, Dept Internal Med, Div Endocrinol & Metab, Seoul, South Korea
[15] Kwandong Univ, Cheil Gen Hosp, Div Endocrinol & Metab, Dept Internal Med,Coll Med, Seoul, South Korea
[16] Womens Healthcare Ctr, Seoul, South Korea
[17] Seoul Natl Univ, Coll Med, Dept Internal Med, Div Endocrinol & Metab, Seoul 151, South Korea
[18] GlaxoSmithKline Korea, Seoul, South Korea
[19] GlaxoSmithKline Asia Pacific, Singapore, Singapore