About the Authors

Tricia McKeever

Affiliation Nottingham Respiratory Biomedical Research Unit, Division of Epidemiology and Public Health, University of Nottingham, City Hospital, Nottingham, United Kingdom

Shiron Saha

Affiliation Department of Respiratory Medicine, Sheffield Teaching Hospitals NHS Trust, Northern General Hospital, Sheffield, United Kingdom

Andrew W. Fogarty

andrew.fogarty@nottingham.ac.uk

Affiliation Nottingham Respiratory Biomedical Research Unit, Division of Epidemiology and Public Health, University of Nottingham, City Hospital, Nottingham, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AWF TM SS. Performed the experiments: AWF TM. Analyzed the data: AWF TM. Wrote the paper: SS AWF TM.