1. 1Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
2. 2Kaiser Permanente Washington Health Research Institute, Seattle, Washington.
3. 3Institute for Health Research, Kaiser Permanente Colorado, Aurora, Colorado.
4. 4Division of Cancer Control and Population Sciences, NCI, Bethesda, Maryland.
5. 5Departments of Family Medicine and Community Health and of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
6. 6Department of Population & Data Sciences, University of Texas Southwestern Medical Center, Dallas, Texas.
7. 7Simmons Comprehensive Cancer Center, Dallas, Texas.
8. 8Division of Research, Kaiser Permanente Northern California, Oakland, California.
9. 9Center for Clinical Epidemiology & Population Health, Marshfield Clinic Research Institute, Marshfield, Wisconsin.
10. 10Division of General Internal Medicine, Massachusetts General Hospital, Boston, Massachusetts.
11. 11Department of Medicine, Robert Wood Johnson Medical School, New Brunswick, New Jersey.
12. 12Hawaii Permanente Medical Group, Kaiser Permanente Center for Integrated Health Care Research, Honolulu, Hawaii.
13. 13Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan.
14. 14Kaiser Permanente Bernard J Tyson School of Medicine, Pasadena, California.
15. 15Pulmonary, Allergy, and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.