1. 1Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington.
2. 2Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, Washington.
3. 3Department of Medicine, University of Washington School of Medicine, Seattle, Washington.
4. 4University of Utah, Salt Lake City, Utah.
5. 5Huntsman Cancer Institute, Salt Lake City, Utah.
6. 6Heidelberg University Hospital, Germany.
7. 7Department of Medicine, Samuel Oschin Comprehensive Cancer Center, Cedars-Sinai Medical Center, Los Angeles, California.
8. 8Washington University School of Medicine, St. Louis, Missouri.
9. 9Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida.
10. 10University of Tennessee Health Science Center, Memphis, Tennessee.
11. 11Department of Medicine and Epidemiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.