D'Incecco, A
Andreozzi, M
Ludovini, V
Rossi, E
Capodanno, A
Landi, L
Tibaldi, C
Minuti, G
Salvini, J
Coppi, E
Chella, A
Fontanini, G
Filice, M E
Tornillo, L
Incensati, R M
Sani, S
Crinò, L
Terracciano, L
Cappuzzo, F
Article History
Revised: 17 September 2014
Accepted: 2 October 2014
First Online: 28 October 2014
Competing interests
: The authors declared no conflict of interest.