1. Karmanos Cancer Institute, Detroit, MI, USA
2. Massachusetts General Hospital, Boston, MA, USA
3. Fred Hutch Cancer Center, Seattle, WA, USA
4. Dartmouth–Hitchcock Medical Center, Lebanon, NH, USA
5. The Ohio State University, Columbus, OH, USA
6. Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC, USA
7. Mayo Clinic, Rochester, MN, USA