Received: 13 November 2018
Accepted: 12 December 2018
First Online: 24 April 2019
: Gambardella Claudio and Mauriello Claudio are PhD student in Medical, Clinical and Sperimental Sciences at Univerity of Campania “Luigi Vanvitelli” – Naples, Italy.
: Consent to publish was given by Ethical Committee "Comitato Etico Università degli Studi della Campania “Luigi Vanvitelli” with protocol number 568/2018.An informed written consent was obtained from all patients enrolled in this study.
: Not applicable
: The authors declare that they have no competing interests.
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