About the Authors

Jung Soo Kim

Contributed equally to this work with: Jung Soo Kim, Jinkyeong Park

Affiliation Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

Jinkyeong Park

Contributed equally to this work with: Jung Soo Kim, Jinkyeong Park

Affiliation Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, Korea

Seong Yong Lim

Affiliation Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea

Yeon-Mok Oh

Affiliation Department of Pulmonary and Critical Care Medicine, Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea

Kwang Ha Yoo

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

Yong Bum Park

Affiliation Department of Pulmonary, Allergy and Critical Care Medicine, Hallym University Medical Center, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea

Seung Soo Sheen

Affiliation Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Yeongtong-gu, Suwon, Korea

Min-Ji Kim

Affiliation Biostatistics team, Samsung Biomedial Research Institute, Seoul, Korea

K. C. Carriere

Affiliation Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, Alberta, Canada and Research Professor, Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Seoul, Korea

Ji Ye Jung

hyeyunpark@skku.edu (HYP); stopyes@yuhs.ac (JYJ)

‡ These authors also contributed equally to this work.

Affiliation Division of Pulmonology, Department of Internal Medicine, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, Korea

Hye Yun Park

hyeyunpark@skku.edu (HYP); stopyes@yuhs.ac (JYJ)

‡ These authors also contributed equally to this work.

Affiliation Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

Competing Interests

Min-Ji Kim is employed by 'Samsung Biomedical Research Institute' and Jung Soo Kim, K. C. Carriere, and Hye Yun Park are employed by 'Samsung Medical Center'. This do not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: HYP JYJ JSK KHY YBP. Performed the experiments: HYP JYJ JSK JP. Analyzed the data: HYP JSK KCC MK SSS. Wrote the paper: HYP JYJ JSK SYL YO KHY YBP SSS JP KCC MK.