Bigliardi, S
Morselli, M
Potenza, L
Bresciani, P
Cuoghi, A
Coluccio, V
Riva, G
Paolini, A
Fantuzzi, V
Faglioni, L
Nasillo, V
Messerotti, A
Marasca, R
Narni, F
Luppi, M
Forghieri, F
Article History
First Online: 2 June 2014
Competing interests
: The authors declare no conflict of interest.