1. Division of Oncology, Stanford University School of Medicine, Stanford, CA
2. Medical Services, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA
3. Center for Primary Care and Outcomes Research/Health Research and Policy, Stanford University School of Medicine, Stanford, CA
4. Palo Alto Veterans Institute for Research, Palo Alto, CA
5. Seattle Children's Research Institute, Seattle, WA
6. Department of Pediatrics, University of Washington School of Medicine, Seattle, WA