Text and Data Mining valid from 2019-04-15
Received: 5 March 2018
Accepted: 31 March 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by the IRCCS San Raffaele Pisana Ethics Committee, Roma (Italy) (Protocol identification number: SPOL – 17/17 – 6/2017). All participants were volunteers and gave written informed consent which was confirmed by parents if necessary.
: Not applicable.
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