1. Centers for Disease Control and Prevention (CDC) COVID-19 Response Team , Atlanta, Georgia , USA
2. Vanderbilt University Medical Center , Nashville, Tennessee , USA
3. Baylor Scott & White Health , Temple, Texas , USA
4. Texas A&M University College of Medicine , Temple, Texas , USA
5. School of Medicine, University of Colorado , Aurora, Colorado , USA
6. University of Iowa , Iowa City, Iowa , USA
7. Beth Israel Deaconess Medical Center , Boston, Massachusetts , USA
8. Wake Forest University Baptist Medical Center , Winston-Salem, North Carolina , USA
9. Johns Hopkins Hospital , Baltimore, Maryland , USA
10. Hennepin County Medical Center , Minneapolis, Minnesota , USA
11. Montefiore Healthcare Center, Albert Einstein College of Medicine , Bronx, New York , USA
12. University of Washington School of Medicine , Seattle, Washington , USA
13. Baystate Medical Center , Springfield, Massachusetts , USA
14. Intermountain Medical Center and University of Utah , Salt Lake City, Utah , USA
15. School of Public Health, University of Michigan , Ann Arbor, Michigan , USA
16. Emory University School of Medicine , Atlanta, Georgia , USA
17. Cleveland Clinic , Cleveland, Ohio , USA
18. Stanford University School of Medicine , Palo Alto, California , USA
19. David Geffen School of Medicine at UCLA, Ronald Reagan-UCLA Medical Center , Los Angeles, California , USA
20. University of Miami , Miami, Florida , USA
21. Washington University , St. Louis, Missouri , USA
22. Ohio State University Wexner Medical Center , Columbus, Ohio , USA
23. School of Medicine, University of Michigan , Ann Arbor, Michigan , USA