1. Department of Internal Medicine, Dongguk University College of Medicine, Dongguk University Ilsan Hospital, Ilsan, Korea
2. Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
3. Department of Internal Medicine, Gyeongsang National University College of Medicine, Gyeongsang University Changwon Hospital, Gyeongsang, Korea
4. Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea
5. Nephrology Clinic, National Cancer Center of Korea, Seoul, Korea
6. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
7. Kidney Research Institute, Seoul National University, Seoul, Korea
8. Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea