1. Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston
2. Cancer Research and Biostatistics, Seattle, Washington
3. Department of Radiology, University of Pennsylvania Perelman School of Medicine, Philadelphia
4. Department of General Internal Medicine and Primary Care, Brigham and Women’s Hospital, Boston, Massachusetts
5. Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
6. Departments of Radiology and Surgery and the University of Vermont Cancer Center, University of Vermont, Burlington