Gallo, Carmela http://orcid.org/0000-0002-1665-2615
d’Ippolito, Giuliana
Nuzzo, Genoveffa
Sardo, Angela
Fontana, Angelo http://orcid.org/0000-0002-5453-461X
Article History
Received: 30 March 2017
Accepted: 7 September 2017
First Online: 3 November 2017
Competing interests
: The authors declare no competing financial interests.