1. Duke University; Durham NC USA
2. University of California; San Diego CA USA
3. Wake Forest University; Winston-Salem NC USA
4. British Columbia Cancer Agency - Vancouver Island Centre; Victoria BC Canada
5. University of North Carolina; Chapel Hill NC USA
6. Minneapolis Radiation Oncology; Minneapolis MN USA
7. Riverside Cancer Care Center; Newport News VA USA
8. Mayo Clinic; Rochester MN USA
9. University Hospitals Cleveland Medical Center; Cleveland OH USA
10. Therapy Physics, Inc.; Signal Hill CA USA
11. Northwest Medical Physics Center; Lynnwood WA USA
12. Mayo Clinic; Scottsdale AZ USA
13. Health Quest; Poughkeepsie NY USA
14. American Association of Physicists in Medicine; Alexandria VA USA
15. University of Wisconsin; Madison WI USA
16. University of Sydney; Australia