About the Authors

Wenyuan Xu

Contributed equally to this work with: Wenyuan Xu, Guifang Guo

Affiliation Postgraduate Department of Internal Medicine, Weifang Medical University, Weifang, Shandong, China

Guifang Guo

Contributed equally to this work with: Wenyuan Xu, Guifang Guo

Affiliation Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China

Junjuan Li

Affiliation Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China

Zhaolei Ding

Affiliation Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China

Jianhui Sheng

Affiliation Postgraduate Department of Internal Medicine, Weifang Medical University, Weifang, Shandong, China

Juan Li

Affiliation Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China

Wei Tan

tanwei1967@163.com

Affiliation Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WT. Performed the experiments: WX ZD JS Juan Li. Analyzed the data: WT GG WX. Contributed reagents/materials/analysis tools: WX GG Junjuan Li. Wrote the paper: WX GG.