1Department of Internal Medicine, National Medical Center, Seoul,
Korea
2Department of Internal Medicine, Yonsei University College of Medicine, Seoul,
Korea
3Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul,
Korea
4Department of Internal Medicine, Korea University Ansan-Hospital, Korea University College of Medicine, Seoul,
Korea
5Department of Internal Medicine, Seoul National University Bundang Hopsital, Seongnam,
Korea
6Department of Internal Medicine, Seoul National University College of Medicine, Seoul,
Korea
7Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang,
Korea
8Department of Internal Medicine, Uijeongbu St. Mary’s Hospital, The Catholic University of Korea, Uijeongbu,
Korea
9Department of Internal Medicine, Inje University Ilsan-Paik Hospital, Goyang,
Korea
10Department of Internal Medicine, Konkuk University School of Medicine, Seoul,
Korea
11Department of Internal Medicine, Gachon University Gil Medical Center, Gachon University of Medicine and Science, Incheon,
Korea
12Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul,
Korea
13Kidney Research Institute, Seoul National University, Seoul,
Korea