1. From the Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill (Karafin, Park)
2. The Department of Pathology and Laboratory Medicine, Weill Cornell Medical Center, New York, New York (DeSimone)
3. Proficiency Testing (Dvorak), College of American Pathologists, Northfield, Illinois
4. ARUP Laboratories, Department of Pathology, University of Utah School of Medicine, Salt Lake City (Metcalf)
5. The Department of Laboratory Medicine, University of Washington Medical Center, Seattle (Pagano)
6. The Department of Pathology, Molecular & Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York (Schwartz)
7. Biostatistics (Souers), College of American Pathologists, Northfield, Illinois
8. The Department of Pathology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire (Szczepiorkowski)
9. The Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts (Uhl)
10. The Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois (Ramsey)