COVID-19(3) Radiothérapie(3) Cancer(2) Radiotherapy(2) SARS-CoV-2(2) pneumopathy(1) low-dose(1) in vivo(1) Prognosis(1) Radiobiologie(1) Cancer du sein(1) acute respiratory syndrome(1) Coronavirus disease 2019(1) report(1) Mortality(1) Entire lung(1) risk(1) anti-inflammatory property(1) Randomized(1) Controlled trial(1) Sein.(1) Bacterial(1) radiation therapy(1) Traitements(1) clinical presentation(1) coronavirus disease(1) acute respiratory syndrome coronavirus 2(1) pandemic(1) in vitro data(1) lung(1)