Text and Data Mining valid from 2018-08-29
Received: 5 June 2018
Accepted: 9 August 2018
First Online: 29 August 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The ethical committee of the Fondazione Policlinico Universitario A. Gemelli IRCCS of Rome approved the study.
: 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.