Text and Data Mining valid from 2019-04-01
Received: 17 August 2018
Accepted: 11 September 2018
First Online: 24 April 2019
Ethics approval and consent to participate
: This study is an observational study and the ethical committee of the University Hospital of Catania ruled that no formal ethical approval was required in this particular cases. However, all patients signed an informed consent form for diagnostic and surgical procedures.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.