1. Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami School of Medicine, Miami, Florida
2. Department of Medicine and Cell Biology, State University of New York Downstate Medical Center, Brooklyn, New York
3. University of Birmingham, Birmingham, United Kingdom
4. Mount Sinai Icahn School of Medicine, New York, New York
5. Jackson Memorial Hospital, Miami, Florida; and
6. Lung Investigation Unit, Queen Elizabeth Hospital, Birmingham, United Kingdom