Corrigendum: Abscopal Effects in Radio-Immunotherapy—Response Analysis of Metastatic Cancer Patients With Progressive Disease Under Anti-PD-1 Immune Checkpoint Inhibition - Trommer, Maike; Yeo, Sin Yuin; Persigehl, Thorsten; Bunck, Anne; Grüll, Holger; Schlaak, Max; Theurich, Sebastian; von Bergwelt-Baildon, Michael; Morgenthaler, Janis; Herter, Jan M.; Celik, Eren; Marnitz, Simone; et al. (Frontiers in Pharmacology, 2020)