Yu C, Sun J, Leng X, Yang J. Cancer Manag Res. 2019;11:611–624.

At the authors request, the Editor and Publisher of Cancer Management and Research are retracting the published article. The authors have informed the journal that they are unable to verify the reported findings and cannot provide the original data for their study. To maintain the integrity of the scholarly record the authors requested to retract the article and the Editor agreed with this decision. The authors apologize to the journal’s readers for any inconvenience.

We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines.

The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.