Corrigendum to "Exosome-encapsulated miRNAs contribute to CXCL12/CXCR4-induced liver metastasis of colorectal cancer by enhancing M2 polarization of macrophages" [Canc. Lett. 474 (2020) 36–52]. (28th January 2022) - Wang, Dong; Wang, Xiaohui; Si, Mahan; Yang, Juan; Sun, Shiyue; Wu, Haochen; Cui, Shuxiang; Qu, Xianjun; Yu, Xinfeng