1. Portland Veterans Affairs Medical Center and Oregon Health & Science University; Portland Oregon
2. University of Chicago Medical Center; Chicago Illinois
3. Comprehensive Cancer Center; Yale University; New Haven Connecticut
4. School of Medicine; Yale University; New Haven Connecticut
5. City of Hope Comprehensive Cancer Center; Duarte California
6. Memorial Sloan-Kettering Cancer Center; New York New York
7. University of Rochester; Rochester New York
8. Case Western Reserve University; Cleveland Ohio
9. Wake Forest University; Winston-Salem North Carolina
10. State University of New York Upstate Medical University; Syracuse New York
11. Syracuse Veterans Affairs Medical Center; Syracuse New York