Received: 24 March 2020
Accepted: 6 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Santobono-Cardarelli Hospitals (date of approval April 2, 2017), it was performed according to the principles of the Declaration of Helsinki and written informed consents were obtained for all study participants from a parent or legal guardian.
: Not applicable.
: No conflicts of interest to disclose.