1. Department of Radiation Oncology; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
2. Department of Radiation Oncology; University of Minnesota Medical School; Minneapolis MN USA
3. Department of Radiation Oncology; Baylor Scott & White; Temple TX USA
4. Department of Radiation Oncology; CARTI; Inc.; Little Rock AR USA
5. Oklahoma Cancer Specialists and Research Institute; Tulsa OK USA