About the Authors

Chun-Hua Xu

Affiliations First Department of Respiratory Medicine and Nanjing Chest Hospital, Nanjing, Jiangsu, China, Clinical Center of Nanjing Respiratory Diseases, Nanjing, Jiangsu, China

Li -Ke Yu

yulike_doctor@163.com

Affiliations First Department of Respiratory Medicine and Nanjing Chest Hospital, Nanjing, Jiangsu, China, Clinical Center of Nanjing Respiratory Diseases, Nanjing, Jiangsu, China

Ke-Ke Hao

Affiliations First Department of Respiratory Medicine and Nanjing Chest Hospital, Nanjing, Jiangsu, China, Clinical Center of Nanjing Respiratory Diseases, Nanjing, Jiangsu, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LKY. Performed the experiments: CHX. Analyzed the data: KKH. Contributed reagents/materials/analysis tools: CHX LKY KKH. Wrote the paper: CHX.