Lombardo, Luca
Ceci, Marianna
Mollica, Francesco
Mazzanti, Valentina
Palone, Mario
Siciliani, Giuseppe
Article History
Received: 5 January 2018
Accepted: 18 November 2018
First Online: 4 January 2019
Conflict of interest
: L. Lombardo, M. Ceci, F. Mollica, V. Mazzanti, M. Palone and G. Siciliani declare that they have no competing interests.