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Article History

Received: 7 February 2018

Accepted: 12 September 2018

First Online: 20 September 2018

Ethics approval and consent to participate

: The study was approved by local ethical committee (Comitato Etico Palermo 1, University Hospital P. Giaccone of Palermo) and written informed consent to participate was obtained by all participants to the study. The form of the informed consent was approved by the local ethic committee of the Palermo University Hospital “Paolo Giaccone”.

: All patients gave their consent to participate to the study and for the publication of the results.

: The authors declare that they have no competing interests.

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