1. Department of Pathology and Cell Biology, Columbia University, New York, New York.
2. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto General Hospital, Toronto, Canada.
3. Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia Pennsylvania.
4. Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts.
5. Department of Anatomic Pathology; Milan, Italy.
6. Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.
7. Department of Pathology, University of Michigan, Ann Arbor, Michigan.
8. Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
9. International Center for Oncologic Pathology Consultations; Centro Diagnostico Italiano, Milan, Italy.
10. Department of Pathology and Laboratory Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin.
11. Department of Pathology, Woodland Hills Medical Center, Woodland Hills, California.
12. Department of Anatomic Pathology, Moffitt Cancer Center, Tampa, Florida.