Testing Longer Duration Radiation Therapy Versus the Usual Radiation Therapy in Patients With Cancer That Has Spread to the Brain
NRG Oncology
NRG Oncology
NRG Oncology
Dana-Farber Cancer Institute
Alliance for Clinical Trials in Oncology
NRG Oncology
Royal Marsden NHS Foundation Trust
Yale University
RenJi Hospital
Memorial Sloan Kettering Cancer Center