1. Division of Biostatistics, Department of Public Health Sciences, University of California, Davis, School of Medicine, Davis, California, and Kaiser Permanente Washington Health Research Institute, Kaiser Permanente Washington, Seattle, Washington (D.L.M.)
2. Kaiser Permanente Washington Health Research Institute, Kaiser Permanente Washington, Seattle, Washington (L.A., E.J.A.B.)
3. Department of Surgery, Office of Health Promotion Research, Larner College of Medicine at the University of Vermont and University of Vermont Cancer Center, Burlington, Vermont (B.L.S.)
4. Department of Radiology, University of Washington School of Medicine; Department of Health Systems and Population Health, University of Washington School of Public Health; and Hutchinson Institute for Cancer Outcomes Research, Seattle, Washington (C.I.L.)
5. PicnicHealth, San Francisco, California (M.C.S.B.)
6. Department of Training and Scientific Research, University Medical Center, and Breast Imaging Unit, Diagnostic Imaging Center, Tam Anh General Hospital, Ho Chi Minh City, Vietnam (T.H.H.)
7. Department of Radiology, University of North Carolina, Chapel Hill, North Carolina (L.M.H.)
8. Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania (R.A.H.)
9. The Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine at Dartmouth and Dartmouth Cancer Center, Lebanon, New Hampshire (A.N.A.T.)
10. General Internal Medicine Section, Department of Veterans Affairs, and Departments of Medicine and Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California (K.K.).