About the Authors

Qingxia Du

Affiliation Department of Respiratory Medicine and Department of Emergency, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China

Jianmin Jin

Affiliation Department of Respiratory Medicine and Department of Emergency, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China

Xiaofang Liu

Affiliation Department of Respiratory Medicine and Department of Emergency, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China

Yongchang Sun

suny@ccmu.edu.cn

Affiliations Department of Respiratory Medicine and Department of Emergency, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China, Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, 100191 China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: QD YS. Performed the experiments: QD YS. Analyzed the data: QD XL. Contributed reagents/materials/analysis tools: QD JJ. Wrote the paper: QD YS.