Tiseo, Giusy
Mazzone, Antonino
Falcone, Marco
Article History
Received: 17 December 2018
Accepted: 19 December 2018
First Online: 1 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The data provided are part of an observational study. All procedures performed in the study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments.
: The data provided are part of an observational study. Approval of the study protocol was obtained from the institutional review boards at each hospital, which waived the requirement for obtaining informed consent.