1. 1Department of Medicine, Johns Hopkins University, Baltimore, MD;
2. 2Department of Medicine, Emory University, Atlanta, GA;
3. 3Department of Medicine, Wake Forest University, Winston-Salem, NC;
4. 4Department of Medicine, University of Colorado, Denver, CO;
5. 5Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC;
6. 6Geisinger Medical Laboratories, Danville, PA;
7. 7Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA;
8. 8Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC;
9. 9Department of Medicine, East Carolina University, Greenville, NC;
10. 10Department of Medicine, University of Rochester, Rochester, NY;
11. 11St Charles Healthcare, Bend, OR;
12. 12Versiti Blood Research Institute, Milwaukee, WI;
13. 13Department of Medicine, Medical College of Wisconsin, Milwaukee, WI;
14. 14Department of Medicine, Washington University, St Louis, MO;
15. 15Department of Medicine, Mayo Clinic, Rochester, MN;
16. 16Department of Medicine, Cleveland Clinic, Cleveland, OH;
17. 17Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA;
18. 18Department of Medicine, University of Utah, Salt Lake City, UT;
19. 19Department of Medicine, University of Alabama at Birmingham;
20. 20Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS;
21. 21Department of Pathology, University of New Mexico, Albuquerque, NM;
22. 22Baptist Health South Florida, Miami, FL;
23. 23Department of Medicine, The Ohio State University, Columbus, OH;
24. 24Department of Laboratory Medicine and Pathology and
25. 25Department of Medicine, University of Minnesota, Minneapolis, MN; and
26. 26Clinical & Translational Science Institute, University of Minnesota, Minneapolis, MN