1 University of Texas at Tyler, 12347, Tyler, Texas, United States; Pamela.McShane@uttyler.edu.
2 COPD Foundation, 451589, Miami, Florida, United States.
3 University of Kentucky College of Public Health, 50880, Epidemiology, Lexington, Kentucky, United States.
4 Stanford University School of Medicine, 10624, Medicine, Stanford, California, United States.
5 Massachusetts General Hospital, 2348, Department of Pulmonary Critical Care, Boston, Massachusetts, United States.
6 University of Alabama at Birmingham, 9968, Medicine, Gregory Fleming James Cystic Fibrosis Research Center, Birmingham, Alabama, United States.
7 University of Texas Health Science Center at San Antonio, Pulmonary Diseases & Critical Care, San Antonio, Texas, United States.
8 Emory University School of Medicine, 12239, Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Atlanta, Georgia, United States.
9 Mayo Clinic, Pulmonary Disease and Criticalcare Medicine, Rochester, Minnesota, United States.
10 University of Connecticut Medical Center, Division of Pulmonary and Critical Care Medicine, Farmington, Connecticut, United States.