Received: 29 August 2021
Accepted: 22 January 2022
First Online: 3 February 2022
: The study was performed according to the Helsinki II declaration and approved by the local Paediatric Ethical Committee (Paediatric Ethical Committee – Tuscany Region, approval number: 65/2019, in date 03/09/2019).
: Written informed consent was obtained from the parents of enrolled children.
: The authors have no conflicts of interest to declare.