1. Memorial Sloan Kettering Cancer Center, New York, NY
2. Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC
3. Alliance Statistics and Data Management Center, Mayo Clinic, Scottsdale, AZ
4. Brigham and Women's Hospital, Boston, MA
5. The Alliance for Clinical Trials in Oncology, Boston, MA
6. Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL