1. Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
2. Institut Jules Bordet, Brussels, Belgium
3. Mayo Clinic, Jacksonville, FL
4. MD Anderson Cancer Center, Houston, TX
5. Allegheny General Hospital, National Surgical Adjuvant Breast and Bowel Project, Pittsburgh, PA
6. Loyola University Chicago Stritch School of Medicine, Maywood, IL
7. Memorial Sloan-Kettering Cancer Center, New York, NY