Romano, Ciro http://orcid.org/0000-0002-5807-6601
Pace, Gianvito
Sellitto, Ausilia
Reginelli, Alfonso
Article History
Received: 7 August 2018
Accepted: 9 September 2018
First Online: 24 October 2018
Conflict of interest
: C. Romano, G. Pace, A. Sellitto and A. Reginelli declare that they have no competing interests.