1. Stanford University School of Medicine, Stanford, CA;
2. Dana-Farber Cancer Institute, Boston, MA;
3. Robert H. Lurie Cancer Center of Northwestern University, Chicago, IL;
4. Stanford University, Stanford, CA;
5. Stanford University Medical Center, Stanford, CA;
6. University of Texas MD Anderson Cancer Center, Houston, TX;
7. Boston University/Boston Medical Center, Boston, MA;
8. Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA;
9. Health East Cancer Care, Lake Elmo, MN;
10. The Ohio State University Comprehensive Cancer Center, Columbus, OH;
11. University of Michigan, Ann Arbor, MI;
12. The Permanente Medical Group, South San Francisco, CA;
13. Weill Cornell Medical College, New York, NY;
14. H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL;
15. University of Pennsylvania Abramson Cancer Center, Philadelphia, PA;
16. Northwestern Medicine, Chicago, IL;