Mercadante, Sebastiano
Adile, Claudio
Ferrera, Patrizia
Masedu, Francesco
Valenti, Marco
Aielli, Federica
Article History
Received: 2 August 2016
Accepted: 5 December 2016
First Online: 13 December 2016
Compliance with ethical standards
: Informed consent was obtained. The study conforms to the principal outline by the Declaration of Helsinki and was approved by the local ethical committee.
: The authors declare that they have no conflict of interest.
: The study did not receive any financial support.