Ethics Committee Approval: Ethics committee approval was received for this study from the ethics committee of Azienda Ospedaliera di Rilievo Nazionale Santobono-Pausilipon.Informed Consent: Written informed consent was obtained from patients' parents who participated in this study.
Peer-review: Externally peer-reviewed.Author Contributions: Concept -P.M., C.D.; Design -V.T., E.V.; Supervision -V.T.; Data Collection and/or Processing -C.D., E.V.; Analysis and/or Interpretation -P.M., V.T.; Literature Review -C.D., E.V.; Writer -P.M., V.T.; Critical Review -C.D., E.V.