1. South Texas Veterans Health Care System, San Antonio, Texas;
2. University of Texas Health, San Antonio, Texas;
3. Division of Pulmonary and Critical Care, University of California Los Angeles, Los Angeles, California;
4. Midwest Chest Consultants, PC, St. Charles, Missouri;
5. Verona Pharma Plc, London, United Kingdom and Raleigh, North Carolina;
6. StatMind AB, Lund, Sweden; and
7. Division of Pulmonary and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania