About the Authors

Weifeng Pi

Contributed equally to this work with: Weifeng Pi, Xuejun Guo

Affiliation Department of Respiratory Medicine, Xinhua Hospital, School of Medicine, Jiaotong University, Shanghai, China

Xuejun Guo

Contributed equally to this work with: Weifeng Pi, Xuejun Guo

guoxjz@yahoo.com.cn (XG); xuweiguo@xinhuamed.com.cn (WX)

Affiliation Department of Respiratory Medicine, Xinhua Hospital, School of Medicine, Jiaotong University, Shanghai, China

Liping Su

Affiliation Department of Bioengineering, National University of Singapore, Singapore, Singapore

Weiguo Xu

guoxjz@yahoo.com.cn (XG); xuweiguo@xinhuamed.com.cn (WX)

Affiliation Department of Respiratory Medicine, Xinhua Hospital, School of Medicine, Jiaotong University, Shanghai, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WX. Performed the experiments: WP XG LS. Analyzed the data: WP XG. Contributed reagents/materials/analysis tools: WX. Wrote the paper: WP XG.