Received: 10 July 2020
Accepted: 14 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: All research followed Ethical Standards stated in World Medical Association Declaration of Helsinki. The study was approved by the “Comitato Etico” AOU Università degli Studi della Campania “L. Vanvitelli”, Naples, Italy. All patients’ parents provided parental written informed consent to partecipate.
: Parental written informed consent for publication was collected.
: The authors declare that they have no financial or non-financial competing interest.