About the Authors

Xiangde Liu

Affiliation Pulmonary, Critical Care, Sleep and Allergy Medicine, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska, United States of America

Qiuhong Fang

Affiliation Department of Pulmonary and Critical Care, Beijing Chaoyang Hospital, The Capital Medical University, Beijing, China

Huijung Kim

hikim7337@gamil.com

Affiliation Pulmonary and Critical Care Division, WonKwang University, Sanbon Medical Center, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XL QF HK. Analyzed the data: XL QF HK. Contributed reagents/materials/analysis tools: XL. Wrote the paper: XL HK.