Corrigendum to "Single vs multiple fraction palliative radiation therapy for bone metastases: Cumulative meta-analysis" [Radiother Oncol 141 (2019) 56–61]. (July 2020) - Chow, Ronald; Hoskin, Peter; Schild, Steven E.; Raman, Srinivas; Im, James; Zhang, Daniel; Chan, Stephanie; Chiu, Nicholas; Chiu, Leonard; Lam, Henry; Chow, Edward; Lock, Michael