Fiocchetti, M
Nuzzo, M T
Totta, P
Acconcia, F
Ascenzi, P
Marino, M
Article History
Received: 3 June 2014
Revised: 28 July 2014
Accepted: 25 August 2014
First Online: 9 October 2014
Competing interests
: The authors declare no conflict of interest.