About the Authors

Yong Kyu Lee

Affiliation Nephrology Division, Internal Medicine Department, National Health Institute Corporation, Ilsan Hospital, Goyang, Republic of Korea

Hae Won Lee

Affiliation Nephrology Division, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea

Kyu Hun Choi

Affiliation Nephrology Division, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea

Beom Seok Kim

docbsk@yuhs.ac

Affiliation Nephrology Division, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea

Competing Interests

This study was funded by SK chemical and Yonsei University College of Medicine. However this does not alter the authors' adherence to PLOS one policies on sharing data and materials.

Author Contributions

Wrote the paper: YKL BSK. Conceived and designed the experiments: BSK. Performed the experiments: HWL. Analyzed the data: YKL. Contributed reagents/materials/analysis tools: KHC BSK.