[1] CHA Univ, CHA Bundang Med Ctr, Dept Internal Med, Sch Med, Seongnam, South Korea
[2] Eulji Univ, Nowon Eulji Med Ctr, Dept Internal Med, Seoul, South Korea
[3] Inje Univ, Haeundae Paik Hosp, Coll Med, Dept Internal Med, Pusan, South Korea
[4] Sungkyunkwan Univ, Kangbuk Samsung Hosp, Sch Med, Dept Internal Med, Seoul, South Korea
[5] Hanyang Univ, Seoul Hosp, Coll Med, Dept Internal Med, Seoul, South Korea
[6] Chosun Univ, Chosun Univ Hosp, Sch Med, Dept Internal Med, Gwangju, South Korea
[7] BunDangJeSaeng Gen Hosp, Dept Internal Med, Seongnam, South Korea
[8] Konkuk Univ, Med Ctr, Sch Med, Dept Internal Med, Seoul, South Korea
[9] Yonsei Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[10] Yonsei Univ, Yongin Severance Hosp, Coll Med, Dept Internal Med, Yongin, South Korea
[11] Jeju Natl Univ, Coll Med, Dept Internal Med, Jeju, South Korea
[12] Hallym Univ, Coll Med, Dept Internal Med, Chunchon, South Korea
[13] Keimyung Univ Sch Med, Dongsan Hosp, Dept Internal Med, Daegu, South Korea
[14] Sungkyunkwan Univ, Samsung Changwon Hosp, Sch Med, Dept Internal Med, Chang Won, South Korea
[15] Korea Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[16] Soonchunhyang Univ, Hosp Bucheon, Dept Internal Med, Bucheon, South Korea
[17] Myongji Hosp, Dept Internal Med, Goyang, South Korea
[18] Seoul Natl Univ, Seoul Natl Univ Bundang Hosp, Coll Med, Dept Internal Med, Seongnam, South Korea
[19] Pusan Natl Univ Hosp, Dept Internal Med, Pusan, South Korea
[20] Seoul Med Ctr, Dept Internal Med, Seoul, South Korea
[21] Yeungnam Univ, Coll Med, Dept Internal Med, Deagu, South Korea
[22] Gachon Univ, Gil Med Ctr, Dept Internal Med, Incheon, South Korea
[23] Catholic Univ Korea, Seoul St Marys Hosp, Dept Internal Med, Seoul, South Korea
[24] Cent Hosp, Dept Internal Med, Shihung, South Korea
[25] Inha Univ, Coll Med, Dept Internal Med, Incheon, South Korea
[26] Daewoong Pharmaceut Co Ltd, Clin Dev Ctr, Seoul, South Korea
[27] Catholic Univ Korea, Bucheon St Marys Hosp, Coll Med, Div Endocrinol & Metab,Dept Internal Med, Bucheon, South Korea
[28] Catholic Univ Korea, Bucheon St Marys Hosp, Div Endocrinol & Metab, Coll Med,Dept Internal Med, 327 Sosa Ro, Bucheon 14647, South Korea