Viola, Fabrizio Antonio http://orcid.org/0000-0002-8730-1118
Spanu, Andrea
Ricci, Pier Carlo http://orcid.org/0000-0001-6191-4613
Bonfiglio, Annalisa
Cosseddu, Piero
Article History
Received: 18 January 2018
Accepted: 9 May 2018
First Online: 23 May 2018
Competing Interests
: The authors declare no competing interests.