Buscemi, Silvio
Marventano, Stefano
Castellano, Sabrina
Nolfo, Francesca
Rametta, Stefania
Giorgianni, Gabriele
Matalone, Margherita
Marranzano, Marina
Mistretta, Antonio
Article History
Received: 17 May 2016
Accepted: 22 July 2016
First Online: 9 August 2016
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study were approved by the ethics committee of the University of Catania and the Department of School Policies of Catania.
: Informed consent was obtained from all individual participants included in the study.