1. University of Pennsylvania Perelman School of Medicine, 14640, Division of Pulmonary, Allergy and Critical Care , Philadelphia, Pennsylvania, United States;
2. University of Pennsylvania, 6572, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, Pennsylvania, United States
3. Stanford University, 6429, Division of Cardiovascular Medicine, Department of Medicine, Stanford, California, United States
4. Stanford University, 6429, Division of Pulmonary and Critical Care, Stanford, California, United States
5. Brown University, 6752, Division of Pulmonary, Critical Care and Sleep Medicine, Providence, Rhode Island, United States
6. University of Colorado, 1878, Division of Pulmonary Sciences and Critical Care Medicine, Denver, Colorado, United States
7. Vanderbilt University Medical Center, 12328, Division of Allergy, Pulmonary and Critical Care Medicine, Nashville, Tennessee, United States
8. Washington University in St Louis, 7548, Division of Pulmonary and Critical Care Medicine, St Louis, Missouri, United States
9. Johns Hopkins University, 1466, Division of Pulmonary and Critical Medicine, Baltimore, Maryland, United States
10. University of Pennsylvania Perelman School of Medicine, 14640, Division of Pulmonary, Allergy and Critical Care , Philadelphia, Pennsylvania, United States
11. University of Pennsylvania, 6572, Department of Biobehavioral Health Sciences, School of Nursing, Philadelphia, Pennsylvania, United States
12. University of Pennsylvania Perelman School of Medicine, 14640, Division of Pulmonary, Allergy and Critical Care, Philadelphia, Pennsylvania, United States