_:n782fa785ecf341eeb515f2ec6a190176xb1
<http://schema.org/image>
<https://static-content.springer.com/image/art%3A10.1186%2Fs12913-020-05878-z/MediaObjects/12913_2020_5878_Fig1_HTML.png>
<https://bmchealthservres.biomedcentral.com/articles/10.1186/s12913-020-05878-z>