Tocci, G http://orcid.org/0000-0002-0635-4921
Nati, G
Cricelli, C
Parretti, D
Lapi, F
Ferrucci, A
Borghi, C
Volpe, M http://orcid.org/0000-0002-9642-8380
Article History
Received: 31 January 2016
Revised: 23 June 2016
Accepted: 18 August 2016
First Online: 15 September 2016
Competing interests
: The authors declare no conflict of interest.