Received: 4 February 2022
Accepted: 22 April 2022
First Online: 7 May 2022
Change Date: 29 July 2022
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s13052-022-01333-3
: The Institutional Ethical Committee (Milano Area 2) approved the study. Due to the retrospective nature of the study, the consent to participate was waived.
: No individual data.