Gumina, Stefano
Camerota, Filippo
Celletti, Claudia
Venditto, Teresa
Candela, Vittorio http://orcid.org/0000-0002-6097-4136
Article History
Received: 10 July 2018
Accepted: 6 September 2018
First Online: 14 September 2018
Compliance with ethical standards
: All participants signed an informed consent form in accordance with the Declaration of Helsinki. According to the law of our country, this study does not need any ethics committee approval.
: The authors declare that there is no conflict of interest.