Jia R, Liang Y, Chen R, Liu G, Wang H, Tang M, Zhou X, Wang H, Yang Y, Wei H, Li B, Song Y, Zhao J. Osteopontin facilitates tumor metastasis by regulating epithelial–mesenchymal plasticity. Cell Death & Disease. 2016 Dec 29;7(12):e2564. doi: 10.1038/cddis.2016.422.