David S. Chang, MD, MSDepartment of Radiation OncologyCHRISTUS St. Patrick Regional Cancer Center Lake Charles, LA, USA Foster D. Lasley, MDDepartment of Radiation OncologyIndiana University School of MedicineIndianapolis, IN, USA Indra J. Das, PhD, FACR, FASTRODepartment of Radiation OncologyIndiana University School of MedicineIndianapolis, IN, USA Marc S. Mendonca, PhDDepartment of Radiation OncologyIndiana University School of MedicineIndianapolis, IN, USA Joseph R. Dynlacht, PhDDepartment of Radiation OncologyIndiana University School of MedicineIndianapolis, IN, USA