1. Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, California
2. Division of Research, Kaiser Permanente Northern California, Oakland
3. Department of Quality and Systems of Care, Kaiser Permanente Southern California, Pasadena
4. Kaiser Permanente Washington Health Research Institute, Kaiser Permanente Washington, Seattle
5. Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
6. Simmons Comprehensive Cancer Center and Department of Population & Data Sciences, University of Texas Southwestern Medical Center, Dallas
7. Research and Evaluation, Kaiser Permanente Southern California, Pasadena