About the Authors

Jing Feng

Contributed equally to this work with: Jing Feng, Qing-shan Wang

Affiliations Respiratory Department, Tianjin Medical University General Hospital, Tianjin, China, Division of Pulmonary and Critical Care Medicine, Duke University Medical Center, Durham, North Carolina, United States of America

Qing-shan Wang

Contributed equally to this work with: Jing Feng, Qing-shan Wang

Affiliation Institute of Toxicology, Shandong University, Jinan, Shandong, China

Ambrose Chiang

Affiliation Division of Pulmonary and Critical Care Medicine, Duke University Medical Center, Durham, North Carolina, United States of America

Bao-yuan Chen

zyyhxkcby@yahoo.com.cn

Affiliation Respiratory Department, Tianjin Medical University General Hospital, Tianjin, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JF AC ByC. Performed the experiments: JF QsW. Analyzed the data: JF QsW. Wrote the paper: JF.