Text and Data Mining valid from 2018-11-08
Received: 5 July 2018
Accepted: 30 October 2018
First Online: 8 November 2018
Ethics approval and consent to participate
: All the subjects, after full explanation of the purpose and nature of all procedures used, gave their written informed consent to participate in the study, which was approved by the Ethics Committee of the Fondazione IRCCS Ca′ Granda Ospedale Maggiore Policlinico of Milan.
: Not Applicable.
: The authors declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported<b>.</b>
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.