1. From the Department of Pathology, University of Utah, Salt Lake City (Witt).
2. From the Institute for Clinical and Experimental Pathology, ARUP, Salt Lake City, Utah (Witt, Zhou).
3. From the Department of Pathology, University of Vermont Medical Center, Burlington (Ambaye, Schinstine).
4. From the Department of Pathology, University of Iowa, Iowa City (Bellizzi).
5. From the Department of Pathology, Cleveland Clinic, Cleveland, Ohio (Booth).
6. From the Department of Pathology, University of Wisconsin, Madison (Sundling, Kurtycz).
7. From the Department of Pathology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire (Nguyen).
8. From the Department of Pathology, University of Rochester, Rochester, New York (Russell).
9. From the Department of Pathology, University of Maryland, Baltimore (Staats).
10. From the Department of Pathology, Methodist Jennie Edmundson Hospital, Council Bluffs, Iowa (Thomsen).
11. From the Department of Pathology, Stanford University, Palo Alto, California (Troxell).
12. From the Department of Biostatistics (Souers), College of American Pathologists, Northfield, Illinois.
13. From the Department of Proficiency Testing (Dvorak), College of American Pathologists, Northfield, Illinois.
14. From the Department of Pathology, Northwestern Medicine, Chicago, Illinois (Lin).