1 Department of Radiation Oncology, University of Pennsylvania , Philadelphia, PA , USA.
2 Department of Radiation Oncology, New York University Perlmutter Cancer Center , New York, NY , USA.
3 Department of Radiation Oncology, Sidney Kimmel Cancer Center at Thomas Jefferson University , Philadelphia, PA , USA.
4 Department of Gynecology and Obstetrics, Johns Hopkins Hospital , Baltimore, MD , USA.
5 Department of Radiation Oncology, Henry Ford Health Systems , Detroit, MI , USA.
6 Department of Radiation Oncology, University of Toronto , Toronto, ON , Canada.
7 Department of Medicine, Division of Hematology/Oncology, Hospital of the University of Pennsylvania , Philadelphia, PA , USA.
8 Department of Radiation Oncology, Duke University Medical Center , Durham, NC , USA.
9 Baylor College of Medicine, Texas Children's Hospital , Houston, TX , USA.
10 Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School , Boston, MA , USA.
11 Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute , Bethesda, MD , USA ; International Cancer Expert Corps , Chevy Chase, MD , USA.