1. Mayo Clinic, Rochester, Minnesota, USA
2. Mayo Clinic, Scottsdale, Arizona, USA
3. Roswell Park Cancer Institute, Buffalo, New York, USA
4. Vanderbilt University, Nashville, Tennessee, USA
5. Minnesota Hematology Oncology, Coon Rapids, Minnesota, USA
6. Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
7. Dana-Farber Cancer Institute, Boston, Massachusetts, USA
8. City of Hope, Duarte, California, USA
9. Washington University in St. Louis, St. Louis, Missouri, USA
10. University of Washington, Seattle, Washington, USA
11. USC Norris Comprehensive Cancer Center, California, Los Angeles, USA
12. West Cancer Center, Germantown, Tennessee, USA
13. Memorial Sloan Kettering Cancer Center, New York, New York, USA