De Fine, Marcello
Giavaresi, Gianluca
Fini, Milena
Illuminati, Andrea
Terrando, Silvio
Pignatti, Giovanni
Article History
Received: 2 December 2017
Accepted: 25 February 2018
First Online: 9 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not need Institutional Review Board approval.