Since publication of this article, the authors have noticed that there were errors in Fig. 1b (the CT 26 cells colony formation images) and Fig. 7c (the vehicle group images). As a result of the misfiling of the data during preparation of figures, incorrect images were inadvertently inserted in these figures.
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Correction: Inhibition of Stat3 signaling pathway by nifuroxazide improves antitumor immunity and impairs colorectal carcinoma metastasis
