1. Department of Biostatistics, University of Washington, Seattle
2. Division of Dermatology, Department of Medicine, University of Washington School of Medicine, Seattle
3. Dermatopathology Northwest, Bellevue, Washington
4. David Geffen School of Medicine, Department of Medicine, University of California, Los Angeles
5. Pathology Associates, Clovis, California
6. Institut Curie, Department of Pathology, Paris Sciences and Lettres Research University, Paris, France
7. Faculty of Medicine, University of Paris Descartes, Paris, France
8. Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia