1. Kaiser Permanente Washington Health Research Institute, Seattle, Washington (A.K., J.C.)
2. Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, Maryland (V.P.D., S.C.K., J.M.C.)
3. Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah (J.M.I.)
4. Division of Research, Kaiser Permanente Northern California, Oakland, California (D.A.C.)
5. Division of General Internal Medicine, Massachusetts General Hospital, Boston, Massachusetts (J.S.H.)
6. Department of Epidemiology, University of Washington, Seattle, Washington (R.L.W.)
7. Division of Pharmaceutical Outcomes and Policy, University of North Carolina Eshelman School of Pharmacy and Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, and Henry Ford Health System, Detroit, Michigan (J.E.L.)
8. Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington (E.F.B., Y.Z.)
9. University of Texas Health Science Center at Houston, Houston, Texas (J.S.Y.)
10. Department of Population and Data Sciences, University of Texas Southwestern Medical Center, and Simmons Comprehensive Cancer Center, Dallas, Texas (C.S.S.)
11. Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, California (J.E.S.)
12. Institute for Health Research, Kaiser Permanente Colorado, Aurora, Colorado (D.P.R., A.N.B.).