1. From the Department of Pathology, Boston VA Healthcare System, Boston University, Boston, Massachusetts (Xu)
2. the Department of Pathology, University of Kansas Medical Center, Kansas City (Fan)
3. the Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston (Gong)
4. the Department of Pathology, University of Michigan, Ann Arbor (Jing)
5. the Department of Pathology, Northwestern University, Chicago, Illinois (X. Lin)
6. the Department of Pathology, Yale University, New Haven, Connecticut (Wang);
7. the Department of Pathology, Geisinger Medical Center, Danville, Pennsylvania (F. Lin)
8. the Department of Pathology, The Ohio State University Wexner Medical Center, Columbus (Li)