1. The Comparative Health Outcomes, Policy & Economics (CHOICE) Institute, University of Washington, Seattle, WA
2. Department of Biostatistics, University of Washington, Seattle, WA
3. Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
4. Department of Health Systems Science, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA
5. Fred Hutchinson Cancer Center, Seattle, WA