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          The lancet oncology · Feb 2021 Comment LetterIndications for individual internal mammary node irradiation - Authors' reply.- Philip M Poortmans, Caroline Weltens, Carine Kirkove, and European Organisation for Research and Treatment of Cancer Radiation Oncology and Breast Cancer Groups.
- Department of Radiation Oncology, Iridium Kankernetwerk, Wilrijk-Antwerp, Belgium; Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk-Antwerp 2610, Belgium. Electronic address: philip.poortmans@telenet.be.
- Lancet Oncol. 2021 Feb 1; 22 (2): e41.
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