1. University of Texas Health Science Center, San Antonio
2. Brook Army Medical Center/Wilford Hall Medical Center, San Antonio
3. Southwest Oncology Group Statistical Center, Seattle, Washington
4. Kansas City Community Clinical Oncology Program, Kansas City, Missouri
5. University of Kansas Medical Center, Kansas City, Missouri
6. JACC Covenant Health Systems, Lubbock, Texas
7. University of Colorado Health Science Center, Denver, Colorado