1. Southern California Permanente Medical Group; Los Angeles CA USA
2. Landauer Medical Physics; Glenwood IL USA
3. Department of Radiation Medicine; Roswell Park Cancer Institute; Buffalo NY USA
4. Consultant; Reston VA USA
5. Therapy Physics, Inc.; Signal Hill CA USA
6. University of Vermont Medical Center; Burlington VT USA
7. Department of Imaging Physics; The University of Texas MD Anderson Cancer Center; Houston, TX USA
8. Department of Radiation Physics; The University of Texas MD Anderson Cancer Center; Houston TX USA
9. Mayo Clinic; Rochester MN USA
10. Department of Medical Physics; Memorial Sloan-Kettering Cancer Center; New York NY USA
11. Radiology; School of Medicine; University of Colorado; Aurora CO USA
12. Division of Physics and Engineering; Department of Radiation Oncology; The University of Texas Medical Branch; Galveston TX USA
13. Health Quest; Poughkeepsie NY USA
14. University of Rochester Medical Center; Rochester NY USA
15. Department of Radiology; U.C. Davis Medical Center; Sacramento CA USA
16. Northwest Permanente, PC; Clackamas OR USA
17. The Center for Cancer and Blood Disorders; Fort Worth TX USA
18. Centennial Medical Physics; Fort Collins CO USA
19. AAPM Staff