1. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA;
2. Hematology Division, Department of Medicine, University of Washington, Seattle, WA;
3. Department of Radiation Physics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
4. Radiation Oncology, University of Washington, Seattle, WA;
5. Pacific Northwest National Laboratory, Richland, WA; and
6. Medical Oncology, Department of Medicine, University of Washington, Seattle, WA