1. Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
2. Department of Radiation Oncology, Penn State Cancer Institute, Hershey, PA
3. Albert Einstein College of Medicine, The Bronx, NY
4. Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University
5. Department of Radiation Oncology, University Hospitals Seidman Cancer Center, Cleveland, OH
6. Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA
7. Department of Radiation Medicine, Northwell Health, Donald and Barbara Zucker School of Medicine at Hofstra/ Northwell, Lake Success, New York