Stereotactic body radiotherapy to treat breast cancer oligometastases: a systematic review with meta-analysis - Viani, Gustavo Arruda; Gouveia, Andre G.; Louie, Alexander V.; Korzeniowski, Martin; Pavoni, Juliana Fernandes; Hamamura, Ana Carolina; Moraes, Fabio Y (Radiotherapy and Oncology, 2021)