About the Authors

Yun Sil Chang

Contributed equally to this work with: Yun Sil Chang, Soo Jin Choi

Affiliations Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea

Soo Jin Choi

Contributed equally to this work with: Yun Sil Chang, Soo Jin Choi

Affiliation Biomedical Research Institute, MEDIPOST Co., Ltd., Seoul, Korea

So Yoon Ahn

Affiliation Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

Dong Kyung Sung

Affiliation Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea

Se In Sung

Affiliation Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

Hye Soo Yoo

Affiliation Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

Won Il Oh

Affiliation Biomedical Research Institute, MEDIPOST Co., Ltd., Seoul, Korea

Won Soon Park

wonspark@skku.edu

Affiliations Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea

Competing Interests

The authors have the following interests: co-authors Soo Jin Choi and Won-il Oh are employed by MEDIPOST Co., Ltd. Co-author Won-il Oh is a board member and holds stocks in MEDIPOST Co., Ltd. Samsung Medical Center and MEDIPOST Co., Ltd. have issued or filed patents for “Method of treating lung diseases using cells separated or proliferated from umbilical cord blood” under the name of Yun Sil Chang, Won Soon Park and Yoon Sun Yang. The relevent application number is: PCT/KR2007/000535. There are no further patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: WSP. Performed the experiments: SYA DKS HSY. Analyzed the data: YSC SIS. Contributed reagents/materials/analysis tools: WIO. Wrote the paper: YSC SJC.