title: In reply to Rusthoven and Kavanagh.
authors: Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan.
authors: Reshma
authors: R
authors: Jagsi
authors: Departments of Radiation Oncology and Medical Ethics and Health Policy, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
authors: Justin E
authors: JE
authors: Bekelman
authors: Department of Radiation Oncology, Harvard Medical School, Boston, Massachusetts.
authors: Aileen
authors: A
authors: Chen
authors: Department of Radiation Oncology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina.
authors: Ronald C
authors: RC
authors: Chen
authors: Division of Radiation Oncology, Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
authors: Karen
authors: K
authors: Hoffman
authors: Section of Hospital Medicine, Department of Medicine, The University of Chicago, Chicago, Illinois.
authors: Ya-Chen Tina
authors: YC
authors: Shih
authors: Division of Radiation Oncology, Department of Radiation Oncology, Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, Texas.
authors: Benjamin D
authors: BD
authors: Smith
authors: Department of Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut.
authors: James B
authors: JB
authors: Yu
mesh_terms: D057189:Checklist; D016208:Databases, Factual; D009369:Neoplasms; D064887:Observational Studies as Topic / Q000379:methods*; D018787:Radiation Oncology; D012042:Registries