Text and Data Mining valid from 2020-03-06
Received: 27 August 2019
Accepted: 25 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: The study has been approved by the Institutional Review Board of the Bambino Gesù (approval number: 1489OPBG2017).
: Not applicable.
: The authors declare that they have no competing interests.