1. Division of Pulmonary, Allergy, and Critical Care Medicine and
2. Department of Biomedical Data Science, Stanford University, Stanford, California;
3. Division of Clinical and Translational Research, Washington University School of Medicine, St. Louis, Missouri;
4. Division of Critical Care, Department of Anesthesia, Washington University, St. Louis, Missouri;
5. Division of Pulmonary and Critical Care Medicine, University of Texas Southwestern Medical Center, Dallas, Texas;
6. Division of Pulmonary and Critical Care Medicine, University of Virginia, Charlottesville, Virginia;
7. Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, Illinois;
8. Division of Pulmonary and Critical Care Medicine, University of California, Davis, Davis, California;
9. Division of Pulmonary and Critical Care Medicine,
10. Department of Microbiology and Immunology, and
11. Division of Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California, San Francisco, San Francisco, California; and
12. Division of Pulmonary and Critical Care Medicine, Cornell University, New York, New York
13. Department of Epidemiology, University of Michigan, Ann Arbor, Michigan;