Pinto, R
De Summa, S
Danza, K
Popescu, O
Paradiso, A
Micale, L
Merla, G
Palumbo, O
Carella, M
Tommasi, S
Article History
Received: 29 July 2014
Revised: 11 September 2014
Accepted: 13 September 2014
First Online: 13 November 2014
Competing interests
: The authors declare no conflict of interest.