Correction: Downregulation of MicroRNA-644a Promotes Esophageal Squamous Cell Carcinoma Aggressiveness and Stem Cell–like Phenotype via Dysregulation of PITX2

In the original version of this article (1), the authors found five images that were published in error: Fig. 2B, colony formation assay of KYSE-140/miR-644a; Fig. 2C, migration assay of KYSE-140/control (0h); Fig. 2D, invasion assay of KYSE-140/miR-644a; Fig. 4C, “Scramble” proportion of side population cells (top image); and Fig. 5C, alpha-tubulin Western blots (right image). The errors have been corrected in the latest online HTML and PDF versions of the article. The authors regret the errors.