Text and Data Mining valid from 2018-04-04
Received: 2 February 2018
Accepted: 22 March 2018
First Online: 4 April 2018
Ethics approval and consent to participate
: The study was approved by the Mother and Child Department of the University of Palermo (Palermo, Italy); at the time of each recording, patients or their parents signed an informed consent. All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee, and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.
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