1. Department of Radiation Oncology, Mayo Clinic Hospital, Phoenix, Arizona
2. Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota
3. Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
4. Division of Medical Oncology, Mayo Clinic, Rochester, Minnesota
5. Wichita National Cancer Institute Community Oncology Research Program, Wichita, Kansas
6. Southeast Clinical Oncology Research Consortium National Cancer Institute Community Oncology Research Program, Spartanburg, South Carolina
7. Roswell Park Cancer Institute, Buffalo, New York
8. Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida
9. Ohio State University Medical Center, Columbus
10. Now with the University of Maryland School of Medicine, Baltimore