Retraction
The Editors-in-Chief are retracting this article [1] because the study was not conducted with the appropriate ethical oversight. Contrary to the statement in the article that ethics committee approval was not required, an investigation by the Arcispedale Santa Maria Nuova-IRCCS has determined that the study should have been reviewed and approved by an ethics committee. All authors agree with this retraction.
The online version of this article contains the full text of the retracted article as electronic supplementary material.
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