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The Radiation Therapy Oncology Group: a progress report.

The Radiation Therapy Oncology Group (RTOG), founded in 1971, comprises 35 university hospitals which are participating in 21 active protocols, four registries and eight pilot studies, including Phase I/II studies. Case accession has grown to over 1000 in 1977 with 19,801 patients being entered in the RTOG initial registration. Goals of the RTOG include: advancing knowledge of the role of radiation therapy in disease management; improving control of primary and regional disease; reducing morbidity and complications from treatment; and collaborating with other oncology disciplines to obtain data on multimodality therapy.