Ratto, C.
Donisi, L.
Litta, F.
Campennì, P.
Parello, A.
Article History
Received: 3 August 2015
Accepted: 30 October 2015
First Online: 12 December 2015
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: 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.
: Informed consent was obtained from all individual participants included in the study.