Retraction.

Retraction: "MicroRNA-493-5p inhibits proliferation and metastasis of osteosarcoma cells by targeting Kruppel-like factor 5," by Zaiqing Zhang, Gongzeng Luo, Chuandong Yu, Guisheng Yu, Rui Jiang, and Xuefeng Shi, J Cell Physiol. 2019; 13525-13533: The above article, published online on 17 February 2019 in Wiley Online Library (https://onlinelibrary.wiley.com/doi/10.1002/jcp.28030) has been retracted by agreement between the authors, the journal's Editor in Chief, Prof. Dr. Gregg Fields, and Wiley Periodicals LLC. The retraction has been agreed after the authors stated that unintentional errors occurred during the research process, and the experimental results cannot be verified. Thus, the conclusions are considered to be invalid.