About the Authors

Chan Hyuk Park

Affiliation Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea

Eun Hye Kim

Affiliation Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea

Yun Ho Roh

Affiliation Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea

Ha Yan Kim

Affiliation Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea

Sang Kil Lee

sklee@yuhs.ac

Affiliation Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CHP SKL. Performed the experiments: CHP EHK SKL. Analyzed the data: CHP YHR HYK. Contributed reagents/materials/analysis tools: CHP. Contributed to the writing of the manuscript: CHP.