Vezzoli, Renata http://orcid.org/0000-0002-2147-5529
Salvadori, Gianfausto
De Michele, Carlo http://orcid.org/0000-0002-7098-4725
Article History
Received: 18 May 2016
Accepted: 31 July 2017
First Online: 21 September 2017
Competing Interests
: The authors declare that they have no competing interests.