1. Division of Biostatistics, Department of Public Health Sciences, University of California Davis School of Medicine, Davis2Group Health Research Institute, Group Health Cooperative, Seattle, Washington
2. Group Health Research Institute, Group Health Cooperative, Seattle, Washington
3. Departments of Medicine and Epidemiology and Biostatistics, University of California–San Francisco, San Francisco,4General Internal Medicine Section, Department of Veterans Affairs, University of California–San Francisco, San Francisco
4. Department of Surgery, Office of Health Promotion Research, University of Vermont College of Medicine, Burlington6University of Vermont Cancer Center, University of Vermont College of Medicine, Burlington
5. Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire8Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
6. Department of Radiology, The University of North Carolina, Chapel Hill
7. Cancer Control Science Department, American Cancer Society, Atlanta, Georgia