About the Authors

Cheal Wung Huh

Affiliations Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea

Young Hoon Youn

dryoun@yuhs.ac (YHY); hschungmd@gmail.com (HC)

Affiliations Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea

Hyunsoo Chung

dryoun@yuhs.ac (YHY); hschungmd@gmail.com (HC)

Affiliation Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea

Yong Chan Lee

Affiliation Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea

Hyojin Park

Affiliations Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: YHY HC YCL HP. Data curation: CWH YHY HC. Formal analysis: CWH YHY. Investigation: CWH. Methodology: CWH YHY HC HP. Project administration: YHY HC. Resources: YHY HC YCL HP. Software: CWH. Supervision: YHY HC. Visualization: CWH. Writing – original draft: CWH YHY HC. Writing – review & editing: CWH YHY HC HP.