1. National Heart and Lung Institute, Imperial College London, London, United Kingdom;
2. Royal Brompton and Harefield Clinical Group, Guy’s and St. Thomas’ NHS Foundation Trust, London, United Kingdom;
3. Discovery Medicine, GlaxoSmithKline, Stevenage, United Kingdom;
4. Division of Respiratory Medicine, University of Nottingham, Nottingham, United Kingdom;
5. Biostatistics, GlaxoSmithKline R&D, Bangalore, India; and
6. Hastings Centre for Pulmonary Research and
7. Division of Pulmonary, Critical Care, and Sleep Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California