University of California, San Francisco (UCSF), University of California, San Francisco (UCSF), University of California, San Francisco (UCSF), University of Alabama at Birmingham - Division of Pulmonary, Allergy, and Critical Care Medicine, University of Utah, University of California, Los Angeles (UCLA) - Department of Medicine, University of California, Los Angeles (UCLA) - Department of Medicine, University of California, Los Angeles (UCLA) - Department of Medicine, Columbia University - Irving Medical Center, University of Arizona - College of Medicine, University of California, Los Angeles (UCLA) - Department of Medicine, Temple University, University of Iowa, Carver College of Medicine, Department of Internal Medicine, University of North Carolina (UNC) at Chapel Hill - Department of Biostatistics, University of Michigan at Ann Arbor - Department of Internal Medicine, University of Alabama at Birmingham, University of Iowa, University of North Carolina (UNC) at Chapel Hill, Johns Hopkins University, University of Iowa - Department of Radiology, University of Colorado at Denver - Department of Epidemiology, Cornell University - Weill Cornell Medicine, University of Utah, University of Illinois at Chicago, University of North Carolina (UNC) at Chapel Hill, National Jewish Health - Department of Radiology, Mayo Clinic, Wake Forest University - School of Medicine, University of California, San Francisco (UCSF) - Department of Medicine, University of Nebraska at Omaha, National Jewish Health - Department of Medicine, University of California, Los Angeles (UCLA) - Department of Medicine and affiliation not provided to SSRN

affiliation not provided to SSRN, Temple University - Department of Thoracic Medicine and Surgery, Temple University - Temple University Hospital, Temple University Hospital - Department of Clinical Scienes, affiliation not provided to SSRN, Temple University, affiliation not provided to SSRN and affiliation not provided to SSRN

University of Alabama at Birmingham, Loyola University of Chicago - Loyola University Medical Center, Temple University and Please see PDF for full list of authors & affiliations