Marini, E S
Giampietri, C
Petrungaro, S
Conti, S
Filippini, A
Scorrano, L
Ziparo, E
Article History
Received: 18 March 2014
Revised: 11 September 2014
Accepted: 27 October 2014
First Online: 12 December 2014
Competing interests
: The authors declare no conflict of interest.