1. Department of Surgery, Brigham and Women's Hospital, Boston, MA
2. Alliance Statistical Center, Duke University, Durham, NC
3. UNC Chapel Hill, Chapel Hill, NC
4. Women and Infants Hosp, Providence, RI
5. The University of Texas MD Anderson Cancer Center, Houston, TX
6. Dana-Farber Cancer Institute, Boston, MA
7. Dana Farber Cancer Inst, Boston, MA
8. University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
9. City of Hope, Duarte, CA
10. Mount Sinai Medical Center, New York, NY
11. Memorial Sloan Kettering Cancer Center, New York, NY