1. Department of Medicine, Washington University , St. Louis, Missouri , USA
2. CDC COVID-19 Response Team , Atlanta, Georgia , USA
3. Baylor Scott and White Health, Texas A&M University College of Medicine , Temple, Texas , USA
4. Department of Medicine, Vanderbilt University Medical Center , Nashville, Tennessee , USA
5. Department of Health Policy, Vanderbilt University Medical Center , Nashville, Tennessee , USA
6. Department of Emergency Medicine, University of Colorado School of Medicine , Aurora, Colorado , USA
7. Department of Anesthesiology, University of Colorado School of Medicine , Aurora, Colorado , USA
8. Department of Emergency Medicine, University of Iowa , Iowa City, Iowa , USA
9. Department of Emergency Medicine, Beth Israel Deaconess Medical Center , Boston, Massachusetts , USA
10. Department of Medicine, Wake Forest School of Medicine , Winston-Salem, North Carolina , USA
11. Department of Medicine, Johns Hopkins University School of Medicine , Baltimore, Maryland , USA
12. Department of Emergency Medicine and Medicine, Hennepin County Medical Center , Minneapolis, Minnesota , USA
13. Department of Medicine, The Ohio State University , Columbus, Ohio , USA
14. Department of Medicine, Montefiore Health System, Albert Einstein College of Medicine , Bronx, New York , USA
15. Department of Emergency Medicine and Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington , Seattle, Washington , USA
16. Department of Emergency Medicine, University of Washington , Seattle, Washington , USA
17. Department of Medicine, Baystate Medical Center , Springfield, Massachusetts , USA
18. Department of Medicine, Intermountain Medical Center, Murray, Utah and University of Utah , Salt Lake City, Utah , USA
19. School of Public Health, University of Michigan , Ann Arbor, Michigan , USA
20. Department of Medicine, Oregon Health and Sciences University , Portland, Oregon , USA
21. Department of Medicine, Emory University , Atlanta, Georgia , USA
22. Department of Medicine, Cleveland Clinic , Cleveland, Ohio , USA
23. Department of Emergency Medicine, Stanford University School of Medicine , Stanford, California , USA
24. Department of Medicine, University of California-Los Angeles , Los Angeles, California , USA
25. Department of Medicine, University of Miami and Jackson Memorial Health System , Miami, Florida , USA
26. Departments of Internal Medicine and Microbiology and Immunology, University of Michigan , Ann Arbor, Michigan , USA
27. Department of Pediatrics, Vanderbilt University Medical Center , Nashville, Tennessee , USA
28. Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center , Nashville, Tennessee , USA
29. Department of Biostatistics, Vanderbilt University Medical Center , Nashville, Tennessee , USA
30. Department of Emergency Medicine, Vanderbilt University Medical Center , Nashville, Tennessee , USA