1. Department of Biostatistics, University of Washington, Seattle, Washington
2. Department of Biostatistics and Bioinformatics, Fred Hutchinson Cancer Research Center, Seattle, Washington
3. Department of Urology, Mayo Clinic, Scottsdale, Arizona
4. Department of Surgery, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts
5. Department of Pathology and Human Anatomy, Loma Linda School of Medicine, Loma Linda, California
6. Department of Pathology and Laboratory Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
7. Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee