1. College of Medicine University of Illinois at Chicago Chicago Illinois U.S.A.
2. Department of Radiation and Cellular Oncology University of Chicago Chicago Illinois U.S.A.
3. Department of Radiation Oncology University of Texas M.D. Anderson Cancer Center Houston Texas U.S.A.
4. Department of Radiation Oncology University of Illinois Hospital and Health Sciences System Chicago Illinois U.S.A.
5. Department of Dentistry University of Chicago Chicago Illinois U.S.A.