Text and Data Mining valid from 2019-01-26
First Online: 26 January 2019
Compliance with Ethical Standards
: Informed consent was obtained from each patient enrolled. The study was approved by the Local Ethics Committee, Comitato di Bioetica, Azienda Ospedaliero Universitaria di Sassari, Italy (Prot. No. 2476/CE.), and the 1975 Declaration of Helsinki guidelines were followed.
: The authors declare that they have no conflict of interest.