About the Authors

Yao Liu

Affiliation Department of Respiratory Medicine, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China

Song Zhang

Affiliation Department of Respiratory Medicine, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China

Dao-wei Li

Affiliation Department of Respiratory Medicine, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China

Shu-juan Jiang

doctorliuyao@126.com

Affiliation Department of Respiratory Medicine, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YL SJJ. Performed the experiments: YL SZ. Analyzed the data: YL DWL. Contributed reagents/materials/analysis tools: YL SJJ. Wrote the paper: YL SJJ.