High-dose irradiation in combination with non-ablative low-dose radiation to treat metastatic disease after progression on immunotherapy: Results of a phase II trial. - Patel RR; He K; Barsoumian HB; Chang JY; Tang C; Verma V; Comeaux N; Chun SG; Gandhi S; Truong MT; Erasmus JJ; Hong DS; et al. (Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2021)