Article History
First Online: 27 April 2019
Compliance with Ethical Standards
:
: Ugo Pace declares that he has not any conflict of interest and that the study was not funded. Giulio D'Urso declares that he has not any conflict of interest and that the study was not funded. Carla Zappulla declares that she has not any conflict of interest and that the study was not funded.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.This Research did not receive any funds.
: Informed consent was obtained from all individual participants included in the study.