1. Surveillance and Health Services Research Program, Intramural Research Department, American Cancer Society, Atlanta, Georgia
2. Epidemiology Research Program, Intramural Research Department, American Cancer Society, Atlanta, Georgia
3. Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
4. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
5. Division of Public Health Sciences, Fred Hutchison Cancer Research Center, Seattle, Washington