1. University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
2. Memorial-Sloan Kettering Cancer Center, New York, NY
3. The Cleveland Clinic Foundation, Cleveland, OH
4. BCG Oncology, Phoenix, AZ
5. University of Iowa, Iowa City, IA
6. The University of Texas M. D. Anderson Cancer Center, Houston, TX
7. University of Virginia, Charlottesville, VA