The Journal and Authors retract the 28 June 2016 article cited above for the following reasons provided by the Authors:
In one of our collaborating centers (The People's Hospital of AnQiu City), 38 patients were enrolled in an atorvastatin group. Among them, 26 patients lost to follow-up were categorized and analyzed as “non-recurrence group.” It was a fundamental error and thus we must retract this article. We apologize for any inconvenience caused by the retraction of this article.