1. Rapid City Regional Cancer Center, Rapid City, SD
2. University of Texas MD Anderson Cancer Center, Houston, TX
3. Brigham and Women's Hospital and Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
4. Medical College of Wisconsin, Milwaukee, WI
5. Tufts Medical Center, Tufts University School of Medicine, Boston, MA, and Rhode Island Hospital, The Alpert Medical School of Brown University, Providence, RI