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Preoperative radiotherapy plus surgery versus surgery alone for patients with primary retroperitoneal sarcoma (EORTC-62092: STRASS): a multicentre, open-label, randomised, phase 3 trial

Surgical OncologyPrimary Retroperitoneal SarcomaRadiation TherapyMedicineSurgeryCancer TreatmentOncologyRadiation OncologySurgery Versus SurgeryPreoperative Radiotherapy