1. Department of Radiation Oncology The Ohio State University Columbus Ohio USA
2. Department of Radiation Oncology Novant Health Cancer Institute Charlotte North Carolina USA
3. Department of Radiology Ascension Via Christi Saint Francis Wichita Kansas USA
4. Department of Radiation Oncology Allegheny Health Network Pittsburgh Pennsylvania USA
5. Department of Radiation Oncology Mayo Clinic Arizona Phoenix Arizona USA
6. Departments of Radiation Safety and Radiology, University Hospitals Cleveland Medical Center, Department of Radiology Case Western Reserve University Cleveland Ohio USA
7. Centennial Medical Physics Fort Collins Colorado USA
8. Department of Medical Physics, Edmond Odette Cancer Centre Sunnybrook Health Sciences Centre Toronto Ontario Canada