Pogliacomi, Francesco
Schiavi, Paolo
Grappiolo, Guido
Ceccarelli, Francesco
Vaienti, Enrico
Article History
Received: 21 April 2018
Accepted: 10 April 2019
First Online: 24 April 2019
Compliance with ethical standards
: This study was performed following the Declaration of Helsinki principles and was conducted according to the National Ethic Guidelines Statement. Informed consent to participate was obtained from all participants.
: The authors declare that they have no conflict of interest.