1. a Executive Medical Physics Associates, North Miami Beach, Florida
2. Innovative Cancer Institute, South Miami, Florida
3. Department of Radiation Oncology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
4. Department of Radiation Oncology, University of Washington School of Medline, Seattle, Washington
5. Department of Medical Physics, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai, China
6. JFK Comprehensive Cancer Institute, Lake Worth, Florida
7. Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
8. Department of Radiation Oncology, University of North Carolina, Chapel Hill, North Carolina
9. Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, Arkansas
10. Department of Radiation Oncology Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, New York