Received: 1 September 2021
Accepted: 6 February 2022
First Online: 15 March 2022
: The study was conducted according to the World Medical Association’s Declaration of Helsinki and approved by the ethical committee (Area 2 Milano) of the Fondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico (370_2020). Informed consent was obtained by the children’s parents.
: Informed consent was obtained by the children’s parents.
: The authors declare that they have no competing interests.