1. Memorial Sloan Kettering Cancer Center, New York, New York
2. Department of Biostatistics and Center for Statistical Sciences, Brown University School of Public Health, Providence, Rhode Island
3. University of Chicago, Chicago, Illinois
4. Center for Statistical Sciences, Brown University School of Public Health, Providence, Rhode Island
5. Center for Statistical Sciences, Department of Epidemiology, Brown University School of Public Health, Providence, Rhode Island
6. UW Cancer Center at ProHealth Care, Waukesha, Wisconsin
7. Fred Hutchinson Cancer Research Center, Seattle, Washington
8. West Michigan Cancer Center, Kalamazoo
9. University of Virginia Cancer Center, Charlottesville
10. Now with the Department of Radiology, University of Rochester, Rochester, New York
11. Community Hospital, Munster, Indiana
12. Rhode Island Hospital, Providence
13. Delaware/Christiana Care NCORP, Newark
14. Gundersen Health System, La Crosse, Wisconsin
15. Indiana University, Indianapolis
16. University of Pennsylvania, Philadelphia
17. University Hospital of RWTH Aachen, Aachen, Germany