_:n8b9c25f78ce64f2b831d06b5e0c5858cxb1
<http://schema.org/license>
<http://creativecommons.org/publicdomain/zero/1.0/>
<https://bmcpediatr.biomedcentral.com/articles/10.1186/s12887-020-02194-7/peer-review>