Polacchini, Alessio
Metelli, Giuliana
Francavilla, Ruggiero
Baj, Gabriele
Florean, Marina
Mascaretti, Luca Giovanni
Tongiorgi, Enrico
Article History
Received: 30 March 2015
Accepted: 10 November 2015
First Online: 10 December 2015
Competing interests
: The authors declare no competing financial interests.