About the Authors
Division of Pulmonary and Critical Care Medicine, Oregon Health and Sciences University, Portland, Oregon, United States of America
Division of Pulmonary and Critical Care, New York University School of Medicine, New York, New York, United States of America
J. Craig Venter Institute, Rockville, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MW JG. Performed the experiments: JG Yh SH AN. Analyzed the data: JG. Contributed reagents/materials/analysis tools: MJ. Wrote the paper: JG.