About the Authors

Robert J. Boissy

Affiliation University of Nebraska Medical Center, Department of Pathology and Microbiology, Omaha, Nebraska, United States of America

Debra J. Romberger

Affiliation Veterans Nebraska Western Iowa Healthcare System, Omaha, NE, USA and University of Nebraska Medical Center, Pulmonary, Critical Care, Sleep Medicine & Allergy Division, Omaha, Nebraska, United States of America

William A. Roughead

Affiliation University of Nebraska Medical Center, Pulmonary, Critical Care, Sleep Medicine & Allergy Division, Omaha, Nebraska, United States of America

Lisa Weissenburger-Moser

Affiliations University of Nebraska Medical Center, Pulmonary, Critical Care, Sleep Medicine & Allergy Division, Omaha, Nebraska, United States of America, University of Nebraska Medical Center, Department of Epidemiology, Omaha, Nebraska, United States of America

Jill A. Poole

Affiliation University of Nebraska Medical Center, Pulmonary, Critical Care, Sleep Medicine & Allergy Division, Omaha, Nebraska, United States of America

Tricia D. LeVan

tlevan@unmc.edu

Affiliations Veterans Nebraska Western Iowa Healthcare System, Omaha, NE, USA and University of Nebraska Medical Center, Pulmonary, Critical Care, Sleep Medicine & Allergy Division, Omaha, Nebraska, United States of America, University of Nebraska Medical Center, Pulmonary, Critical Care, Sleep Medicine & Allergy Division, Omaha, Nebraska, United States of America, University of Nebraska Medical Center, Department of Epidemiology, Omaha, Nebraska, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RJB DJR JAP TDL. Performed the experiments: WAR LWM. Analyzed the data: RJB TDL. Contributed reagents/materials/analysis tools: RJB. Wrote the paper: RJB WAR JAP TDL.