1. Department of Surgery University of Vermont Burlington Vermont USA
2. Department of Radiology University of Vermont Burlington Vermont USA
3. University of Vermont Cancer Center University of Vermont Burlington Vermont USA
4. Division of Biostatistics Department of Public Health Sciences University of California Davis School of Medicine Davis California USA
5. Kaiser Permanente Washington Health Research Institute, Kaiser Permanente Washington Seattle Washington USA
6. Department of Radiology University of Washington School of Medicine Seattle Washington USA
7. Hutchinson Institute for Cancer Outcomes Research Seattle Washington USA
8. Dartmouth Institute for Health Policy and Clinical Practice Lebanon New Hampshire USA
9. Norris Cotton Cancer Center Geisel School of Medicine at Dartmouth Lebanon New Hampshire USA
10. Department of Medicine University of California San Francisco San Francisco California USA
11. Department of Epidemiology and Biostatistics University of California San Francisco San Francisco California USA
12. General Internal Medicine Section Department of Veterans Affairs University of California San Francisco San Francisco California USA